US6765964B1 - System and method for intracoding video data - Google Patents

System and method for intracoding video data Download PDF

Info

Publication number
US6765964B1
US6765964B1 US09/732,522 US73252200A US6765964B1 US 6765964 B1 US6765964 B1 US 6765964B1 US 73252200 A US73252200 A US 73252200A US 6765964 B1 US6765964 B1 US 6765964B1
Authority
US
United States
Prior art keywords
subblock
mode
video
pixels
prediction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US09/732,522
Inventor
Greg Conklin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intel Corp
Original Assignee
RealNetworks Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RealNetworks Inc filed Critical RealNetworks Inc
Priority to US09/732,522 priority Critical patent/US6765964B1/en
Assigned to REALNETWORKS, INC. reassignment REALNETWORKS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CONKLIN, GREG
Priority claimed from AU2003243595A external-priority patent/AU2003243595A1/en
Application granted granted Critical
Publication of US6765964B1 publication Critical patent/US6765964B1/en
Assigned to INTEL CORPORATION reassignment INTEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REALNETWORKS, INC.
Assigned to REALNETWORKS, INC. reassignment REALNETWORKS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CONKLIN, GREG
Assigned to INTEL CORPORATION reassignment INTEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REALNETWORKS, INC.
Application status is Active legal-status Critical
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/182Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a pixel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/513Processing of motion vectors
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques

Abstract

A video system for coding a stream of video data that includes a stream of video frames divides each video frame into a matrix of a plurality of subblocks, wherein each subblock includes a plurality of pixels. The video system operates in accordance with nine prediction modes. Each prediction mode determines a prediction mode according to which a present subblock is to be coded. One of the nine prediction modes is selected to encode the present subblock, wherein the selected prediction mode provides for a minimum error value in the present subblock.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention pertains to a video system that compresses video data for transmission or storage and decompresses the video data for display. More particularly, the invention pertains to a video system and a method for intracoding video data.

2. Description of the Related Art

Video systems transmit, process and store large quantities of video data. To create a video presentation, such as a video movie, a rendering video system displays the video data as a plurality of digital images, also referred to as “frames,” thereby simulating movement. In order to achieve a video presentation with an acceptable video quality, or to enable transmission and storage at all, a conventional video system modifies the video data prior to transmission or storage. For instance, the video system compresses and encodes the video data to reduce the bit rate for storage and transmission.

In a conventional video system a video encoder is used to compress and encode the video data and a video decoder is used to decompress and to decode the video data. The video encoder outputs video data that has a reduced bit rate and a reduced redundancy. That is, the technique of video compression removes spatial redundancy within a video frame or temporal redundancy between consecutive video frames.

The video encoder and video decoder may be configured to apply one of two types of coding to compress the video stream, namely intracoding and interceding. These two types of coding are based on the statistical properties of the video frames. When the video frames are coded using intracoding, the compression is based on information contained in a single frame (the frame that is compressed) by using the spatial redundancy within the frame. Intracoding, thus, does not depend on any other frames. In contrast, interceding uses at least one other frame as a reference and codes a difference between the frame to be compressed and the reference frame. Intercoding is thus based on a temporal redundancy between consecutive frames in the video data.

The field of video compression is subject to international standards, e.g., International Telecommunications Union (ITU) standard H.263 that defines uniform requirements for video coding and decoding. In addition, manufacturers of video coders and decoders modify or build upon the international standards and implement proprietary techniques for video compression.

Despite the existence of the international standards and the proprietary techniques, there is still a need for improved techniques for video compression. For example, as the quality of a displayed video movie depends directly from the technique used for video compression, any improvement of the video compression technique makes the video movie more pleasing for the viewer.

SUMMARY OF THE INVENTION

An aspect of the invention involves a method of coding a stream of video data including a stream of video frames. The method divides each video frame into a matrix of a plurality of subblocks, wherein each subblock includes a plurality of pixels. The method further defines nine prediction modes, wherein each prediction mode determines a mode according to which a present subblock is to be coded. The method further selects one of the nine prediction modes to encode the present subblock. The selected prediction mode provides for a minimum error value in the present subblock.

Another aspect of the invention involves a video system for coding and decoding a stream of video data that includes a stream of video frames. The video system includes a video encoder and a mode selector. The video encoder is configured to receive a stream of video data including a stream of video frames and to divide each video frame into a matrix of a plurality of subblocks, wherein each subblock includes a plurality of pixels. The mode selector is in communication with the video encoder and is configured to define nine prediction modes. Each prediction mode determines a mode according to which a present subblock is to be coded. The mode selector is further configured to select one of the nine prediction modes to encode the present subblock, wherein the selected prediction mode provides for a minimum error value in the present subblock.

Once the video system has selected the best prediction mode to encode the pixels of the present subblock, the video system encodes the minimum error value and transmits the encoded minimum error value within a compressed bitstream to the decoder. The minimum error value represents a difference between predicted pixels of the present subblock and the original pixels of the subblock. The decoder uses the predicted pixels and the difference to the original pixels to accurately reconstruct the video frame.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other aspects, advantages, and novel features of the invention will become apparent upon reading the following detailed description and upon reference to the accompanying drawings.

FIG. 1 is a high-level block diagram of a system for video applications having an encoding side and a decoding side.

FIG. 2 is a high-level illustration of a frame and its division in macroblocks and subblocks.

FIG. 3 is a subblock illustrating the directions according to which the subblock can be encoded, wherein each direction represents one of eight prediction modes in accordance with the present invention.

FIG. 4 is a flow chart in accordance with an embodiment of the present invention that selects a prediction mode.

FIG. 5 is an illustration of three neighboring subblocks, wherein two subblocks are used to encode the third subblock.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following description, reference is made to the accompanying drawings, which form a part hereof, and which show, by way of illustration, specific embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention. Where possible, the same reference numbers will be used throughout the drawings to refer to the same or like components. Numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be obvious to one skilled in the art that the present invention may be practiced without the specific details or with certain alternative equivalent devices and methods to those described herein. In other instances, well-known methods, procedures, components, and devices have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

FIG. 1 is a high-level block diagram of a video compression and decompression system 1 (hereinafter “video system 1”) having an encoder apparatus 3 and a decoder apparatus 5 that is coupled to the encoder apparatus 3 through a medium 9. The encoder apparatus 3 includes a video encoder 2, a mode selector 14 and a buffer 8. The decoder apparatus 5 includes a buffer 10, a video decoder 12 and a mode selector 16. The encoder apparatus 3 receives a video sequence 20 (VIDEO IN) and encodes the video sequence 20 to generate an encoded and thus compressed representation in one of a number of possible formats. The format may be in an interleaved format tailored for “live” streaming of the encoded representation. The format may also be in a single file format in which each of the encoded representation is stored in a contiguous block within one file.

The video sequence 20 input to the encoder apparatus 3 may be either a live signal, e.g., provided by a video camera, or a prerecorded sequence in a predetermined format. The video sequence 20 includes frames of a digital video, an audio segment consisting of digital audio, combinations of video, graphics, text, and/or audio (multimedia applications), or analog forms of the aforementioned. If necessary, conversions can be applied to various types of input signals such as analog video, or previously compressed and encoded video to produce an appropriate input to the encoder apparatus 3. In one embodiment, the encoder apparatus 3 may accept video in RGB or YUV formats. The encoder apparatus 3, however, may be adapted to accept any format of input as long as an appropriate conversion mechanism is supplied. Conversion mechanisms for converting a signal in one format to a signal in another format are well known in the art.

The medium 9 may be a storage device or a transmission medium. In one embodiment, the video system I may be implemented on a computer. The encoder apparatus 3 sends an encoded video stream (representation) to the medium 9 that is implemented as a storage device. The storage device may be a video server, a hard disk drive, a CD rewriteable drive, a read/write DVD drive, or any other device capable of storing and allowing the retrieval of encoded video data. The storage device is connected to the decoder apparatus 5, which can selectively read from the storage device and decode the encoded video sequence. As the decoder apparatus 5 decodes a selected one of the encoded video sequence, it generates a reproduction of the video sequence 20, for example, for display on a computer monitor or screen.

In another embodiment, the medium 9 provides a connection to another computer, which may be a remote computer, that receives the encoded video sequence. The medium 9 may be a network connection such as a LAN, a WAN, the Internet, or the like. The decoder apparatus 5 within the remote computer decodes the encoded representations contained therein and may generate a reproduction of the video sequence 20 on a screen or a monitor of the remote computer.

Aspects of the video system 1 illustrated in FIG. 1 and described above can be combined and supplemented to achieve other embodiments. Numerous other implementations are consistent with the scope of this invention. Such other implementations need not be restricted to video, but may include audio or other forms of media as well.

Pre-existing video encoding techniques typically break up a frame (picture) into smaller blocks of pixels called macroblocks. Each macroblock can consist of a matrix of pixels, typically a 16×16 matrix, defining the unit of information at which encoding is performed. The matrix of pixels is therefore referred to as a 16×16 macroblock. These video encoding techniques usually break each 16×16 macroblock further up into smaller matrices of pixels. For example, into 8×8 matrices of pixels or 4×4 matrices of pixels. Such matrices are hereinafter referred to as subblocks. In one embodiment of the present invention, a 16×16 macroblock is divided into 16 4×4 subblocks. Those skilled in the art will appreciate that the present invention is equally applicable to systems that use 8×8 subblocks, 4×4 subblocks or only 16×16 marcoblocks without breaking it up into subblocks.

Further, the pre-existing encoding techniques provide for motion compensation and motion estimation using motion vectors. The motion vectors describe the direction, expressed through an x-component and a y-component, and the amount of motion of the 16×16 macroblocks, or their respective subblocks, and are transmitted to the decoder as part of the bit stream. Motion vectors are used for bidirectionally encoded pictures (B-pictures) and predicted pictures (P pictures) as known in the art.

The video encoder 2 performs a discrete cosine transform (DCT) to encode and compress the video sequence 20. Briefly, the video encoder 2 converts the video sequence 20 from the spacial, temporal domain into the frequency domain. The output of the video encoder 2 is a set of signal amplitudes, called “DCT coefficients.” A quantizer receives the DCT coefficients and assigns each of a range (or step size) of DCT coefficient values a single value, such as a small integer, during encoding. Quantization allows data to be represented more compactly, but results in the loss of some data. Quantization on a finer scale results in a less compact representation (higher bit-rate), but also involves the loss of less data. Quantization on a more coarse scale results in a more compact representation (lower bit-rate), but also involves more loss of data. The mode selector 14 communicates with the video encoder 2 and monitors and controls encoding of the video sequence 20. The mode selector 14 determines in accordance with the present invention prediction modes according to which the video encoder 2 encodes the video sequence 20. The mode selector 14 may be a processor or a software module that are configured to operates in accordance with a method of the present invention. FIG. 1 shows the mode selector 14 for illustrative purposes as an element separate from the video encoder 2. Those skilled in the art will appreciate that the functionality of the mode selector 14 may be combined with the functionality of the video encoder 2.

The buffer 8 of the encoder apparatus 3 receives the encoded and compressed video sequence (hereinafter “encoded video sequence”) from the video encoder 2 and adjusts the bit rate of the encoded video sequence before it is sent to the medium 9. Buffering may be required because individual video images may contain varying amounts of information, resulting in varying coding efficiencies from image to image. As the buffer 8 has a limited size, a feedback loop to the quantizer may be used to avoid overflow or underflow of the buffer 8. The bit-rate of the representation is the rate at which the representation data must be processed in order to present the representation in real time.

The decoder apparatus 5 performs the inverse function of the encoder apparatus 3. The buffer 10 serves also to adjust the bit rate of the incoming encoded video sequence. The video decoder 12 decodes and decompresses in combination with the mode selector 16 the incoming video sequence reconstructing the video sequence. The mode selector 16 determines the prediction modes according to which the video encoder 2 encoded the incoming video sequence. The decoder apparatus 5 outputs a decoded and decompressed video sequence 24 illustrated as “VIDEO OUT” (hereinafter “decoded video sequence 24”).

The video decoder 12 receives a bit stream that represents the encoded video sequence from the buffer 10 (FIG. 1). In one embodiment, the video decoder is a conventional video decoder, e.g., a MPEG-2 decoder, that includes a decoder controller, a VLC decoder (Variable Length Coding, VLC) and a reconstruction module. The operation and function of these components are known to those skilled in the art. These components are known to those skilled in the art and described in generally available MPEG documents and publications.

FIG. 2 is a diagram illustrating a video frame 30 that is part of the video sequence 20. As described above, known video encoding techniques typically break up a video frame 30 into macroblocks 36, 36 a, 36 b, 36 c, 36 d. For example, the video frame 30 is divided into a matrix of 16×16 macroblocks 36, 36 a, 36 b, 36 c, 36 d. The video system 1 encodes the macroblocks 36, 36 a, 36 b, 36 c, 36 d line by line, from top to bottom and from left to right, as indicated through a dashed line 34 that illustrates the sequence of, e.g., intra encoding. In the illustrated embodiment, the dashed line 34 ends at the macroblock 36 a, which is the next macroblock to be encoded. All prior macroblocks 36, 36 b, 36 c, 36 d have already been encoded.

The macroblock 36 a, as a representative for all macroblocks 36, 36 a, 36 b, 36 c, 36 d, is shown in greater detail below the video frame 30. The video encoding technique of the video system 1 breaks each macroblock 36, 36 a, 36 b, 36 c, 36 d further up into a matrix of pixels 38, hereinafter referred to as a subblock 38. In one embodiment, the subblock 38 is a 4×4 matrix of pixels, wherein the 16 pixels are labeled as a, b, c, . . . , p. Bordering pixels of an adjacent subblock of a neighboring macroblock 36 b, which is located above the macroblock 36 a, are labeled as A, B, C, D. Further, bordering pixels of a subblock located above and to the right of the macroblock 36 a are labeled as E, F, G, H. Likewise, bordering pixels of an adjacent subblock of a neighboring macroblock 36 c, which is located to the left of the macroblock 36 a, are labeled as I, J, K, L. Bordering pixels of a subblock located below and to the left of the macroblock 36 a are labeled as M, N, O, P. A bordering pixel of a subblock of a macroblock 36 d, which is located above and to the left of the macroblock 36 a, is labeled as Q.

The video system 1 of the present invention codes each macroblock 36 as an intra macroblock. Intra macroblocks are transform encoded without motion compensated prediction. Thus, intra macroblocks do not reference decoded data from either previous or subsequent frames. An I-frame is a frame consisting completely of intra macroblocks. Thus, I-frames are encoded with no reference to previous or subsequent frames. I-frames are also known as “Intra-frames.”

FIG. 3 is a subblock 38 illustrating possible directions according to which the subblock 38 may be encoded. In accordance with the present invention, the subblocks of a macroblock 36, 36 a, 36 b, 36 c, 36 d can be intra coded in one of nine modes (Modes 0, Mode 1, . . . , Mode 9) as listed hereinafter. That is, a particular subblock 38 may be predicted from a subblock above the current subblock that is currently decoded (“vertical prediction”), from the subblock to the left of the current subblock (“horizontal prediction”), or from both the left and the above subblocks (“diagonal prediction”). The Modes 1-8 predict the subblock in a predetermined direction and the Mode 0 uses a uniform average without prediction in a predetermined direction. In FIG. 3, each direction represents one of the eight prediction modes in accordance with the present invention.

Mode 0:

In this mode, each pixel a-p is predicted by the following equation: a , b , c , d , , p = A + B + C + D + I + J + K + L + 4 8 .

Figure US06765964-20040720-M00001

It is contemplated that in this mode as well as in the following modes, a “division” means to round the result down toward “minus infinity” (−∞). For instance, in mode 0, the term “+4” ensures that the division results in a rounding to the nearest integer. This applies also the other modes.

If four of the pixels A-P are outside the current picture (frame) that is currently encoded, the average of the remaining four pixels is used for prediction. If all eight pixels are outside the picture, the prediction for all pixels in this subblock is 128. A subblock may therefore always be predicted in mode 0.

Mode 1:

If the pixels A, B, C, D are inside the current picture, the pixels a-p are predicted in vertical direction as shown in FIG. 3. That is, the pixels a-p are predicted as follows:

a, e, i, m = A
b, f, j, n = B
c, g, k, o = C
d, h, l, p = D

MODE 2:

If the pixels I, J, K, L are inside the current picture, the pixels a-p are predicted in horizontal direction. That is, the pixels a-p are predicted as follows:

a, b, c, d = I
e, f, g, h = J
i, j, k, l = K
m, n, o, p = L

Mode 3:

This mode is used if all pixels A-P are inside the current picture. This corresponds to a prediction in a diagonal direction as shown in FIG. 3. The pixels a-p are predicted as follows:

m = (J + 2K + L + 2)/4
i, n = (I + 2J + K + 2)/4
e, j, o = (Q + 2I + J + 2)/4
a, f, k, p = (I + 2Q + A + 2)/4
b, g, l = (Q + 2A + B + 2)/4
c, h = (A + 2B + C + 2)/4
d = (B + 2C + D + 2)/4

Mode 4:

This mode is used if all pixels A-P are inside the current picture. This is also a diagonal prediction.

a = (A + 2B + C + I + 2J + K + 4)/8
b, e = (B + 2C + D + J + 2K + L + 4)/8
c, f, i = (C + 2D + E + K + 2L + M + 4)/8
d, g, j, m = (D + 2E + F + L + 2M + N + 4)/8
h, k, n = (E + 2F + G + M + 2N + O + 4)/8
l, o = (F + 2G + H + N + 2O + P + 4)/8
p = (G + H + O + P + 2)/4

Mode 5:

This mode is used if all pixels A-P are inside the current picture. This is also a diagonal prediction.

a, j = (Q + A + 1)/2
b, k = (A + B + 1)/2
c, l = (B + C + 1)/2
d = (C + D + 1)/2
e, n = (I + 2Q + A + 2)/4
f, o = (Q + 2A + B + 2)/4
g, p = (A + 2B + C + 2)/4
h = (B + 2C + D + 2)/4
i = (Q + 2I + J + 2)/4
m = (I + 2J + K + 2)/4

Mode 6:

This mode is used if all pixels A-P are inside the current picture. This is a diagonal prediction.

a = (2A + 2B + J + 2K + L + 4)/8
b, i = (B + C + 1)/2
c, j = (C + D + 1)/2
d, k = (D + E + 1)/2
l = (E + F + 1)/2
e = (A + 2B + C + K + 2L + M + 4)/8
f, m = (B + 2C + D + 2)/4
g, n = (C + 2D + E + 2)/4
h, o = (D + 2E + F + 2)/4
p = (E + 2F + G + 2)/4

Mode 7:

This mode is used if all pixels A-P are inside the current picture. This is a diagonal prediction.

a = (B + 2C + D + 2I + 2J + 4)/8
b = (C + 2D + E + I + 2J + K + 4)/8
c, e = (D + 2E + F + 2J + 2K + 4)/8
d, f = (E + 2F + G + J + 2K + L + 4)/8
g, i = (F + 2G + H + 2K + 2L + 4)/8
h, j = (G + 3H + K + 2L + M + 4)/8
k, m = (G + H + L + M + 2)/4
l, n = (L + 2M + N + 2)/4
o = (M + N + 1)/2
p = (M + 2N + O + 2)/2

Mode 8:

This mode is used if all pixels A-P are inside the current picture. This is a diagonal prediction.

a, g = (Q + I + 1)/2
b, h = (I + 2Q + A + 2)/4
c = (Q + 2A + B + 2)/4
d = (A + 2B + C + 2)/4
e, k = (I + J + 1)/2
f, l = (Q + 2I + J + 2)/4
i, o = (J + K + 1)/2
j, p = (I + 2J + K + 2)/4
m = (K + L + 1)/2
n = (J + 2K + L + 2)/2

In one embodiment of the present invention, a mode selection algorithm determines a criteria to select one of the nine modes. The subblock 38 is then encoded in accordance with the selected mode. The mode selection algorithm is described in detail below.

FIG. 4 is a flow chart of a procedure illustrating the method in accordance with the present invention that codes video data including a stream of video frames and that selects one of the prediction modes Modes 0-8. In one embodiment, the method codes a luminance portion (Y) of a video frame.

In a step 28, e.g., when a user activates the video system 1, the procedure initializes the video system 1. The initialization procedure includes, for example, determining whether the encoder apparatus 3 is operating and properly connected to receive the stream of video frames.

In a step 30, the procedure receives the stream of video frames and divides each video frame into a matrix of a plurality of subblocks, wherein each subblock includes a plurality of pixels. The matrix of a plurality of subblocks may include 4×4 subblocks 38 that are part of a macroblock as described above.

In a step 32, the procedure defines the nine prediction modes Mode 0-8, wherein each prediction mode determines a mode according to which a present subblock is to be coded. For example, the procedure may execute a subroutine to calculate and define the modes Mode 0-8.

In a step 34, the procedure selects one of the nine prediction modes Mode 0-8 to encode the present subblock 38. In one embodiment, the procedure calculates for each mode an error value, determines which mode provides a minimum error value and selects that mode for encoding the present subblock 38.

Once the procedure has selected the “best” prediction mode to encode the pixels of the present subblock 38, the procedure encodes the minimum error value and transmits the encoded minimum error value within a compressed bitstream to the decoder. The minimum error value represents a difference between the predicted pixels of the present subblock and the original pixels of the subblock. The difference may be encoded using a DCT, coefficient quantization and variable length coding as known in the art. The decoder uses the predicted pixels and the difference to the original pixels to accurately reconstruct the video frame. The procedure ends at a step 36.

The procedure provides that each of the 4×4 subblocks 38 is coded in accordance with one of the nine prediction modes Mode 0-8. As this may require a considerable number of bits if coded directly, the video system 1 in accordance with the present invention may apply a more efficient way of coding the mode information. A prediction mode of a subblock is correlated with the prediction modes of adjacent subblocks.

FIG. 5 illustrates this through three exemplary subblocks A, B, C. The subblock C is the subblock that is to be encoded (predicted) with the help of the subblocks A, B whose prediction modes are known. The subblock A is located above the subblock C and the subblock B is located left of the subblock C. In this case, an ordering of the most probable, next most probable etc. prediction mode for the subblock C is given. An example of such an ordering table is listed hereinafter. The table is divided into ten groups (Group 1-Group 10). In each group, the respective prediction mode for the subblock A is constant (e.g., Mode 0 of the subblock A is constant in Group 2), and the prediction mode for the subblock B varies. That is, the (constant) prediction mode for the subblock A within a group may be combined with one of the nine prediction modes for the subblock B within that group.

For each combination of the prediction modes of the subblocks A and B, a sequence of nine numbers is given, one number for each of the nine Modes 0-9. For example in Group 3, if the prediction modes for the subblock A and the subblock B are both Mode 1, a string “1 6 2 5 3 0 4 8 7” indicates that the Mode 1, i.e., the first number in the string, is the most probable mode for the subblock C. The Mode 6, i.e., the second number in the string, is the next most probable mode. In the exemplary string, the Mode 7 is the least probable since the number 7 is the last number in the string. The string will be part of the stream of bits that represents the encoded video sequence.

The stream of bits therefore includes information (Prob0=1 (see Table 1)) indicating the mode used for the subblock C. For example, the information may indicate that the next most probable intra prediction mode is Mode 6. Note that a “−” in the table indicates that this instance cannot occur. The term “outside” used in the Table 1 indicates “outside the frame.” If the subblock A or B is within the frame, but is not INTRA coded (e.g., in a P frame, the subblock C could be INTRA coded but either the subblock A or the subblock B may not be INTRA coded), there is no prediction mode. The procedure of the present invention assumes the Mode 0 for such subblocks.

TABLE 1
B A = outside
outside 0 - - - - - - - -
mode 0 0 2 - - - - - - -
mode 1 - - - - - - - - -
mode 2 2 0 - - - - - - -
mode 3 - - - - - - - - - GROUP 1
mode 4 - - - - - - - - -
mode 5 - - - - - - - - -
mode 6 - - - - - - - - -
mode 7 - - - - - - - - -
mode 8 - - - - - - - - -
B A = mode 0
outside 0 1 - - - - - - -
mode 0 0 2 1 6 4 8 5 7 3
mode 1 1 0 2 6 5 4 3 8 7
mode 2 2 8 0 1 7 4 3 6 5
mode 3 2 0 1 3 8 5 4 7 6 GROUP 2
mode 4 2 0 1 4 6 7 8 3 5
mode 5 0 1 5 2 6 3 8 4 7
mode 6 0 1 6 2 4 7 5 8 3
mode 7 2 7 0 1 4 8 6 3 5
mode 8 2 8 0 1 7 3 4 5 6
B A = mode 1
outside 1 0 - - - - - - -
mode 0 1 2 5 6 3 0 4 8 7
mode 1 1 6 2 5 3 0 4 8 7
mode 2 2 1 7 6 8 3 5 0 4
mode 3 1 2 5 3 6 8 4 7 0 GROUP 3
mode 4 1 6 2 0 4 5 8 7 3
mode 5 1 5 2 6 3 8 4 0 7
mode 6 1 6 0 2 4 5 7 3 8
mode 7 2 1 7 6 0 8 5 4 3
mode 8 1 2 7 8 3 4 5 6 0
B A = mode 2
outside - - - - - - - - -
mode 0 0 2 1 8 7 6 5 4 3
mode 1 1 2 0 6 5 7 4 8 3
mode 2 2 8 7 1 0 6 4 3 5
mode 3 2 0 8 1 3 7 5 4 6 GROUP 4
mode 4 2 0 4 1 7 8 6 3 5
mode 5 2 0 1 5 8 4 6 7 3
mode 6 2 0 6 1 4 7 8 5 3
mode 7 2 7 8 1 0 5 4 6 3
mode 8 2 8 7 1 0 4 3 6 5
B A = mode 3
outside - - - - - - - - -
mode 0 0 2 1 3 5 8 6 4 7
mode 1 1 0 2 5 3 6 4 8 7
mode 2 2 8 1 0 3 5 7 6 4
mode 3 3 2 5 8 1 4 6 7 0 GROUP 5
mode 4 4 2 0 6 1 5 8 3 7
mode 5 5 3 1 2 8 6 4 0 7
mode 6 1 6 0 2 4 5 8 3 7
mode 7 2 7 0 1 5 4 8 6 3
mode 8 2 8 3 5 1 0 7 6 4
B A = mode 4
outside - - - - - - - - -
mode 0 2 0 6 1 4 7 5 8 3
mode 1 1 6 2 0 4 5 3 7 8
mode 2 2 8 7 6 4 0 1 5 3
mode 3 4 2 1 0 6 8 3 5 7 GROUP 6
mode 4 4 2 6 0 1 5 7 8 3
mode 5 1 2 5 0 6 3 4 7 8
mode 6 6 4 0 1 2 7 5 3 8
mode 7 2 7 4 6 0 1 8 5 3
mode 8 2 8 7 4 6 1 3 5 0
B A = mode 5
outside - - - - - - - - -
mode 0 5 1 2 3 6 8 0 4 7
mode 1 1 5 6 3 2 0 4 8 7
mode 2 2 1 5 3 6 8 7 4 0
mode 3 5 3 1 2 6 8 4 7 0 GROUP 7
mode 4 1 6 2 4 5 8 0 3 7
mode 5 5 1 3 6 2 0 8 4 7
mode 6 1 6 5 2 0 4 3 7 8
mode 7 2 7 1 6 5 0 8 3 4
mode 8 2 5 1 3 6 8 4 0 7
B A = mode 6
outside - - - - - - - - -
mode 0 1 6 2 0 5 4 3 7 8
mode 1 1 6 5 4 2 3 0 7 8
mode 2 2 1 6 7 4 8 5 3 0
mode 3 2 1 6 5 8 4 3 0 7 GROUP 8
mode 4 6 4 1 2 0 5 7 8 3
mode 5 1 6 5 2 3 0 4 8 7
mode 6 6 1 4 0 2 7 5 3 8
mode 7 2 7 4 6 1 5 0 8 3
mode 8 2 1 6 8 4 7 3 5 0
B A = mode 7
outside - - - - - - - - -
mode 0 2 0 4 7 6 1 8 5 3
mode 1 6 1 2 0 4 7 5 8 3
mode 2 2 7 8 0 1 6 4 3 5
mode 3 2 4 0 8 3 1 7 6 5 GROUP 9
mode 4 4 2 7 0 6 1 8 5 3
mode 5 2 1 0 8 5 6 7 4 3
mode 6 2 6 4 1 7 0 5 8 3
mode 7 2 7 4 0 8 6 1 5 3
mode 8 2 8 7 4 1 0 3 6 5
B A = mode 8
outside - - - - - - - - -
mode 0 2 0 8 1 3 4 6 5 7
mode 1 1 2 0 6 8 5 7 3 4
mode 2 2 8 7 1 0 3 6 5 4
mode 3 8 3 2 5 1 0 4 7 6 GROUP 10
mode 4 2 0 4 8 5 1 7 6 3
mode 5 2 1 0 8 5 3 6 4 7
mode 6 2 1 6 0 8 4 5 7 3
mode 7 2 7 8 4 0 6 1 5 3
mode 8 2 8 3 0 7 4 1 6 5

The information about the prediction modes may be efficiently coded by combining prediction mode information of two subblocks 38 in one codeword. The stream of bits includes then the resulting codewords, wherein each codeword represents the prediction modes of the two subblocks. Table 2 lists exemplary binary codewords for code numbers (Code No.) between 0 and 80. The probability of a mode of the first subblock is indicated as Prob0 and the probability of a mode of the second subblock is indicated as Prob1.

Code No. Prob0 Prob1 Codeword
 0 0 0 1
 1 0 1 001
 2 1 0 011
 3 1 1 00001
 4 0 2 00011
 5 2 0 01001
 6 0 3 01011
 7 3 0 0000001
 8 1 2 0000011
 9 2 1 0001001
10 0 4 0001011
11 4 0 0100001
12 3 1 0100011
13 1 3 0101001
14 0 5 0101011
15 5 0 000000001
16 2 2 000000011
17 1 4 000001001
18 4 1 000001011
19 0 6 000100001
20 3 2 000100011
21 1 5 000101001
22 2 3 000101011
23 5 1 010000001
24 6 0 010000011
25 0 7 010001001
26 4 2 010001011
27 2 4 010100001
28 3 3 010100011
29 6 1 010101001
30 1 6 010101011
31 7 0 00000000001
32 0 8 00000000011
33 5 2 00000001001
34 4 3 00000001011
35 2 5 00000100001
36 3 4 00000100011
37 1 7 00000101001
38 4 4 00000101011
39 7 1 00010000001
40 8 0 00010000011
41 6 2 00010001001
42 3 5 00010001011
43 5 3 00010100001
44 2 6 00010100011
45 1 8 00010101001
46 2 7 00010101011
47 7 2 01000000001
48 8 1 01000000011
49 5 4 01000001001
50 4 5 01000001011
51 3 6 01000100001
52 6 3 01000100011
53 8 2 01000101001
54 4 6 01000101011
55 5 5 01010000001
56 6 4 01010000011
57 2 8 01010001001
58 7 3 01010001011
59 3 7 01010100001
60 6 5 01010100011
61 5 6 01010101001
62 7 4 01010101011
63 4 7 0000000000001
64 8 3 0000000000011
65 3 8 0000000001001
66 7 5 0000000001011
67 8 4 0000000100001
68 5 7 0000000100011
69 4 8 0000000101001
70 6 6 0000000101011
71 7 6 0000010000001
72 5 8 0000010000011
73 8 5 0000010001001
74 6 7 0000010001011
75 8 6 0000010100001
76 7 7 0000010100011
77 6 8 0000010101001
78 8 7 0000010101011
79 7 8 0001000000001
80 8 8 0001000000011

With the nine prediction modes (Table 1) and the probabilities of the modes (Table 1, Table 2), a mode selection algorithm determines the mode according to which a particular subblock is predicted. In one embodiment of the present invention, the algorithm selects the mode using a sum of absolute differences (SAD) between the pixels a-d the corresponding pixels in the original frame, and the above probabilities of the methods. The SAD and the probability table are used to select the mode for a particular subblock 38. The algorithm calculates a parameter uError for each of the nine possible modes Mode 0-8. The mode that provides the smallest uError is the mode selected for the subblock 38.

The uError is calculated as follows:

uError=SAD({a, . . . ,p},{original frame})+rd quant[uMBQP]* uProb,

where SAD({a, . . . ,p},{original frame} is the sum of absolute difference between the pixels a-p and the corresponding pixels in the original frame,

where rd_quant[uMBQP] is a table of constant values indexed by a quantization parameter uMBQP. uMBQP is given by

const U8 rd_quant[32]={1,1,1,1,1,1,2,2,2,2,3,3,3,4,4,5,5,6,7,7,8,9,11,12,13,15,17,19,21,24, 27,30}; and

where uProb is the probability of the mode occurring, provided by the position in the mode probability table (Table 1).

For example, the prediction mode for the subblocks A is the Mode 1 and the prediction mode for the subblock B is the Mode 1. The string “1 6 2 5 3 0 4 8 7” indicates that the Mode 1 is also the most probable mode for the subblock C. The Mode 6 is the second most probable mode, etc. Thus, when the algorithm calculates uError for the Mode 0, the probability uProb is 5. Further, for the Mode 1 the probability uProb is 0, for the Mode 2 the probability uProb is 2, for the Mode 3 the probability uProb is 4, and so forth.

In addition to coding the luminance portion (Y) of the video frame, the video system 1 of the present invention may also predict the chrominance portions (U, V) of the video frame. The chrominance portions may be considered as chrominance planes (U and V-planes). Typically, the chrominance planes (U and V-planes) are a quarter of the size of a luminance plane. Thus, in a 16×16 macroblock a corresponding 8×8 block of pixels exists in both the U and V-planes. These 8×8 blocks are divided into 4×4 blocks. In general, separate prediction modes are not transmitted for chrominace blocks. Instead, the modes transmitted for the Y-plane blocks are used as prediction modes for the U and V-plane blocks.

While the above detailed description has shown, described and identified several novel features of the invention as applied to a preferred embodiment, it will be understood that various omissions, substitutions and changes in the form and details of the described embodiments may be made by those skilled in the art without departing from the spirit of the invention. Accordingly, the scope of the invention should not be limited to the foregoing discussion, but should be defined by the appended claims.

Claims (22)

What is claimed is:
1. A method of coding a stream of video data including a stream of video frames, comprising:
dividing each video frame into a matrix of a plurality of subblocks, wherein each subblock includes a plurality of pixels;
defining nine prediction modes, each prediction mode determining a mode according to which a present subblock is to be coded; and
selecting one of the nine prediction modes to encode the present subblock, the selected prediction mode providing for a minimum error value in the present subblock.
2. The method of claim 1, further comprising encoding the minimum error value and transmitting the encoded minimum error value within a compressed bitstream to a decoder, wherein the minimum error value represents a difference between predicted pixels of the present subblock and the original pixels of the subblock.
3. The method of claim 2, further comprising receiving the compressed bitstream and using the predicted pixels and the difference to the original pixels to accurately reconstruct the video frame.
4. The method of claim 1, wherein the prediction modes provide for a prediction of the present subblock using pixels of neighboring subblocks, and wherein the prediction modes include a horizontal prediction mode, a vertical prediction mode and six diagonal prediction modes.
5. The method of claim 1, further comprising calculating for each of the nine prediction modes an error value and selecting from the error values the minimum error value.
6. The method of claim 5, further comprising calculating the error value as a function of a sum of absolute differences between pixels of the present subblock and pixels of a subblock of an original video frame, as a function of indexed constant values, and as a function of a probability that a particular mode exists for the present subblock.
7. The method of claim 6, wherein constant values are indexed by a quantization parameter.
8. The method of claim 1, further comprising predicting the present subblock through at least a first adjacent subblock and a second adjacent subblock, wherein the prediction mode of the first adjacent subblock and the prediction mode of the second adjacent subblock are available.
9. The method of claim 8, further comprising defining a plurality of strings of numbers, each number of a string of numbers representing a probability that a particular prediction mode exists for the present subblock.
10. The method of claim 9, wherein the string of numbers includes nine numbers, wherein a first number represents the prediction mode that is most probable and wherein a last number represents the prediction mode that is least probable.
11. The method of claim 10, further comprising dividing the plurality of strings into groups, wherein in each group the prediction mode of the first adjacent subblock is constant and the prediction mode of the second adjacent subblock varies.
12. The method of claim 8, further comprising generating a plurality of codewords, wherein each codeword represents the prediction modes of the two subblocks.
13. A video system for coding and decoding a stream of video data that includes a stream of video frames, comprising:
a video encoder configured to receive a stream of video data including a stream of video frames and to divide each video frame into a matrix of a plurality of subblocks, wherein each subblock includes a plurality of pixels; and
a mode selector in communication with the video encoder, the mode selector configured to define nine prediction modes, each prediction mode determining a mode according to which a present subblock is to be coded, and configured to select one of the nine prediction modes to encode the present subblock, the selected prediction mode providing for a minimum error value in the present subblock.
14. The video system of claim 13, wherein the video encoder encodes the minimum error value and transmits the encoded minimum error value within a compressed bitstream to a decoder, wherein the minimum error value represents a difference between predicted pixels of the present subblock and the original pixels of the subblock.
15. The video system of claim 14, further comprising receiving the compressed bitstream and using the predicted pixels and the difference to the original pixels to accurately reconstruct the video frame.
16. The video system of claim 13, wherein the prediction modes provide for a prediction of the present subblock using pixels of neighboring subblocks, and wherein the prediction modes include a horizontal prediction mode, a vertical prediction mode and six diagonal prediction modes.
17. The video system of claim 13, wherein the mode selector calculates for each of the nine prediction modes an error value and selects from the error values the minimum error value.
18. The video system of claim 17, wherein the mode selector calculates the error value as a function of a sum of absolute differences between pixels of the present subblock and pixels of a subblock of an original video frame, as a function of indexed constant values, and as a function of a probability that a particular mode exists for the present subblock.
19. The video system of claim 18, wherein constant values are indexed by a quantization parameter.
20. The video system of claim 13, wherein the mode selector predicts the present subblock through at least a first adjacent subblock and a second adjacent subblock, wherein the prediction mode of the first adjacent subblock and the prediction mode of the second adjacent subblock are available.
21. The video system of claim 20, wherein the mode selector defines a plurality of strings of numbers, each number of a string of numbers representing a probability that a particular prediction mode exists for the present subblock.
22. The video system of claim 21, wherein the string of numbers includes nine numbers, wherein a first number represents the prediction mode that is most probable and wherein a last number represents the prediction mode that is least probable.
US09/732,522 2000-12-06 2000-12-06 System and method for intracoding video data Active 2022-10-27 US6765964B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/732,522 US6765964B1 (en) 2000-12-06 2000-12-06 System and method for intracoding video data

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
US09/732,522 US6765964B1 (en) 2000-12-06 2000-12-06 System and method for intracoding video data
AU2003243595A AU2003243595A1 (en) 2000-12-06 2003-06-12 Intra coding video data methods and apparatuses
CN 200910128919 CN101505429B (en) 2000-12-06 2003-06-12 Apparatus and method for intra coding video data
PCT/US2003/018963 WO2004006587A1 (en) 2000-12-06 2003-06-12 Intra coding video data methods and apparatuses
US10/525,164 US7606312B2 (en) 2000-12-06 2003-06-12 Intra coding video data methods and apparatuses
KR20057000286A KR100952892B1 (en) 2000-12-06 2003-06-12 Intra coding video data methods and apparatuses
EP20030762992 EP1649697B1 (en) 2000-12-06 2003-06-12 Intra coding video data apparatuses
CN 03820368 CN100481955C (en) 2000-12-06 2003-06-12 Method and apparatus for intra coding video data
JP2004562614A JP4491349B2 (en) 2000-12-06 2003-06-12 Intra coding method and apparatus for video data
US10/848,992 US7706444B1 (en) 2000-12-06 2004-05-18 System and method for intracoding video data
US12/767,744 US8385415B2 (en) 2000-12-06 2010-04-26 System and method for intracoding and decoding video data
US13/679,957 US8908764B2 (en) 2000-12-06 2012-11-16 System and method for intracoding and decoding video data
US14/140,349 US9432682B2 (en) 2000-12-06 2013-12-24 System and method for intracoding video data
US15/245,975 US9930343B2 (en) 2000-12-06 2016-08-24 System and method for intracoding video data
US15/926,235 US10250885B2 (en) 2000-12-06 2018-03-20 System and method for intracoding video data

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US10525164 Continuation-In-Part 2003-06-12
US10/525,164 Continuation-In-Part US7606312B2 (en) 2000-12-06 2003-06-12 Intra coding video data methods and apparatuses
US10/848,992 Continuation US7706444B1 (en) 2000-12-06 2004-05-18 System and method for intracoding video data

Publications (1)

Publication Number Publication Date
US6765964B1 true US6765964B1 (en) 2004-07-20

Family

ID=30116280

Family Applications (7)

Application Number Title Priority Date Filing Date
US09/732,522 Active 2022-10-27 US6765964B1 (en) 2000-12-06 2000-12-06 System and method for intracoding video data
US10/848,992 Active 2024-07-16 US7706444B1 (en) 2000-12-06 2004-05-18 System and method for intracoding video data
US12/767,744 Active US8385415B2 (en) 2000-12-06 2010-04-26 System and method for intracoding and decoding video data
US13/679,957 Active US8908764B2 (en) 2000-12-06 2012-11-16 System and method for intracoding and decoding video data
US14/140,349 Active US9432682B2 (en) 2000-12-06 2013-12-24 System and method for intracoding video data
US15/245,975 Active US9930343B2 (en) 2000-12-06 2016-08-24 System and method for intracoding video data
US15/926,235 Active US10250885B2 (en) 2000-12-06 2018-03-20 System and method for intracoding video data

Family Applications After (6)

Application Number Title Priority Date Filing Date
US10/848,992 Active 2024-07-16 US7706444B1 (en) 2000-12-06 2004-05-18 System and method for intracoding video data
US12/767,744 Active US8385415B2 (en) 2000-12-06 2010-04-26 System and method for intracoding and decoding video data
US13/679,957 Active US8908764B2 (en) 2000-12-06 2012-11-16 System and method for intracoding and decoding video data
US14/140,349 Active US9432682B2 (en) 2000-12-06 2013-12-24 System and method for intracoding video data
US15/245,975 Active US9930343B2 (en) 2000-12-06 2016-08-24 System and method for intracoding video data
US15/926,235 Active US10250885B2 (en) 2000-12-06 2018-03-20 System and method for intracoding video data

Country Status (1)

Country Link
US (7) US6765964B1 (en)

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030012278A1 (en) * 2001-07-10 2003-01-16 Ashish Banerji System and methodology for video compression
US20030206594A1 (en) * 2002-05-01 2003-11-06 Minhua Zhou Complexity-scalable intra-frame prediction technique
US20030223645A1 (en) * 2002-05-28 2003-12-04 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode estimation
US20030223496A1 (en) * 2002-05-28 2003-12-04 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode organization
US20030223495A1 (en) * 2002-05-28 2003-12-04 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode communication
US20040179601A1 (en) * 2001-11-16 2004-09-16 Mitsuru Kobayashi Image encoding method, image decoding method, image encoder, image decode, program, computer data signal, and image transmission system
US20060159354A1 (en) * 2005-01-19 2006-07-20 Samsung Electronics Co., Ltd. Method and apparatus for predicting frequency transform coefficients in video codec, video encoder and decoder having the apparatus, and encoding and decoding method using the method
US20060176962A1 (en) * 2005-02-07 2006-08-10 Koji Arimura Image coding apparatus and image coding method
US20060215919A1 (en) * 2001-12-17 2006-09-28 Microsoft Corporation Spatial extrapolation of pixel values in intraframe video coding and decoding
US20070147501A1 (en) * 2004-02-13 2007-06-28 Frederic Loras Method for finding the prediction direction in intraframe video coding
WO2007125856A1 (en) 2006-04-28 2007-11-08 Ntt Docomo, Inc. Image predictive coding device, image predictive coding method, image predictive coding program, image predictive decoding device, image predictive decoding method and image predictive decoding program
US20080175317A1 (en) * 2007-01-18 2008-07-24 Samsung Electronics Co., Ltd. Method and apparatus for encoding and decoding based on intra prediction
WO2008126843A1 (en) 2007-04-09 2008-10-23 Ntt Docomo, Inc. Image prediction/encoding device, image prediction/encoding method, image prediction/encoding program, image prediction/decoding device, image prediction/decoding method, and image prediction decoding program
US7499492B1 (en) * 2004-06-28 2009-03-03 On2 Technologies, Inc. Video compression and encoding method
CN100534194C (en) 2005-09-06 2009-08-26 三星电子株式会社 Methods and apparatus for video intraprediction encoding and decoding
WO2009131075A1 (en) 2008-04-24 2009-10-29 株式会社エヌ・ティ・ティ・ドコモ Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
US20090296813A1 (en) * 2008-05-28 2009-12-03 Nvidia Corporation Intra prediction mode search scheme
CN100584027C (en) 2005-09-06 2010-01-20 三星电子株式会社 Methods and apparatus for video intraprediction encoding and decoding
US20100061645A1 (en) * 2008-09-11 2010-03-11 On2 Technologies Inc. System and method for video encoding using adaptive loop filter
US20100061444A1 (en) * 2008-09-11 2010-03-11 On2 Technologies Inc. System and method for video encoding using adaptive segmentation
US20100061455A1 (en) * 2008-09-11 2010-03-11 On2 Technologies Inc. System and method for decoding using parallel processing
WO2010041624A1 (en) 2008-10-09 2010-04-15 株式会社エヌ・ティ・ティ・ドコモ Moving image encoding device, moving image decoding device, moving image encoding method, moving image decoding method, moving image encoding program, moving image decoding program, moving image processing system and moving image processing method
US7706444B1 (en) 2000-12-06 2010-04-27 Realnetworks, Inc. System and method for intracoding video data
US20100118957A1 (en) * 2001-07-11 2010-05-13 Dolby Laboratories Licensing Corporation Video Image Compression Using Unequal Weights
US20100128995A1 (en) * 2008-01-18 2010-05-27 Virginie Drugeon Image coding method and image decoding method
US20100150237A1 (en) * 2008-12-17 2010-06-17 Nvidia Corporation Selecting a macroblock encoding mode
US20100195730A1 (en) * 2009-02-02 2010-08-05 Nvidia Corporation Dual stage intra-prediction video encoding system and method
WO2010095341A1 (en) 2009-02-18 2010-08-26 株式会社エヌ・ティ・ティ・ドコモ Image encoding device, method and program, and, image decoding device, method and program
WO2010110126A1 (en) 2009-03-23 2010-09-30 株式会社エヌ・ティ・ティ・ドコモ Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
WO2010119757A1 (en) 2009-04-14 2010-10-21 株式会社エヌ・ティ・ティ・ドコモ Image encoding apparatus, method, and program, and image decoding apparatus, method, and program
US20110129015A1 (en) * 2007-09-04 2011-06-02 The Regents Of The University Of California Hierarchical motion vector processing method, software and devices
US20110142132A1 (en) * 2008-08-04 2011-06-16 Dolby Laboratories Licensing Corporation Overlapped Block Disparity Estimation and Compensation Architecture
KR20110114524A (en) 2009-01-22 2011-10-19 가부시키가이샤 엔.티.티.도코모 Device, method and program for image prediction encoding, device, method and program for image prediction decoding, and encoding/decoding system and method
WO2012011432A1 (en) 2010-07-20 2012-01-26 株式会社エヌ・ティ・ティ・ドコモ Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
WO2012096095A1 (en) 2011-01-12 2012-07-19 株式会社エヌ・ティ・ティ・ドコモ Image predict coding method, image predict coding device, image predict coding program, image predict decoding method, image predict decoding device, and image predict decoding program
WO2012096104A1 (en) 2011-01-12 2012-07-19 株式会社エヌ・ティ・ティ・ドコモ Image predict coding device, image predict coding method, image predict coding program, image predict decoding device, image predict decoding method, and image predict decoding program
WO2013069384A1 (en) 2011-11-07 2013-05-16 株式会社エヌ・ティ・ティ・ドコモ Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
CN101945270B (en) 2009-07-06 2013-06-19 联发科技(新加坡)私人有限公司 Video coder, method for internal prediction and video data compression
AU2013200690B2 (en) * 2002-06-28 2013-06-27 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US20130195176A1 (en) * 2010-08-10 2013-08-01 Sk Telecom Co., Ltd. Method and device for encoding/decoding image using adaptive encoding/decoding mode indexing method
US20140010279A1 (en) * 2012-07-09 2014-01-09 Qualcomm Incorporated Most probable mode order extension for difference domain intra prediction
WO2014045651A1 (en) 2012-09-24 2014-03-27 株式会社エヌ・ティ・ティ・ドコモ Video prediction encoding device, video prediction encoding method, video prediction decoding device and video prediction decoding method
US8781004B1 (en) 2011-04-07 2014-07-15 Google Inc. System and method for encoding video using variable loop filter
US8780971B1 (en) 2011-04-07 2014-07-15 Google, Inc. System and method of encoding using selectable loop filters
US8780996B2 (en) 2011-04-07 2014-07-15 Google, Inc. System and method for encoding and decoding video data
US8873874B2 (en) 2010-10-06 2014-10-28 NTT DoMoCo, Inc. Image predictive encoding and decoding system
US8885706B2 (en) 2011-09-16 2014-11-11 Google Inc. Apparatus and methodology for a video codec system with noise reduction capability
US9131073B1 (en) 2012-03-02 2015-09-08 Google Inc. Motion estimation aided noise reduction
US9154799B2 (en) 2011-04-07 2015-10-06 Google Inc. Encoding and decoding motion via image segmentation
US20150370931A1 (en) * 2014-06-20 2015-12-24 Alcatel-Lucent Usa Inc. Reducing the data rate of compressive measurement by using linear prediction
US9262670B2 (en) 2012-02-10 2016-02-16 Google Inc. Adaptive region of interest
US9344729B1 (en) 2012-07-11 2016-05-17 Google Inc. Selective prediction signal filtering
US9392272B1 (en) 2014-06-02 2016-07-12 Google Inc. Video coding using adaptive source variance based partitioning
US9479800B2 (en) 2008-04-07 2016-10-25 Qualcomm Incorporated Video refresh adaptation algorithms responsive to error feedback
US9578324B1 (en) 2014-06-27 2017-02-21 Google Inc. Video coding using statistical-based spatially differentiated partitioning
US9762931B2 (en) 2011-12-07 2017-09-12 Google Inc. Encoding time management in parallel real-time video encoding
US9794574B2 (en) 2016-01-11 2017-10-17 Google Inc. Adaptive tile data size coding for video and image compression
US9955179B2 (en) 2009-07-03 2018-04-24 Intel Corporation Methods and systems for motion vector derivation at a video decoder
US10102613B2 (en) 2014-09-25 2018-10-16 Google Llc Frequency-domain denoising

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8929448B2 (en) * 2006-12-22 2015-01-06 Sony Corporation Inter sub-mode decision process in a transcoding operation
JP5166339B2 (en) * 2008-03-28 2013-03-21 三星電子株式会社Samsung Electronics Co.,Ltd. Encoding and / or decoding method and apparatus of the intra prediction mode information of the image
US8885704B2 (en) 2010-10-01 2014-11-11 Qualcomm Incorporated Coding prediction modes in video coding
US9025661B2 (en) 2010-10-01 2015-05-05 Qualcomm Incorporated Indicating intra-prediction mode selection for video coding
US8913662B2 (en) * 2011-01-06 2014-12-16 Qualcomm Incorporated Indicating intra-prediction mode selection for video coding using CABAC

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677735A (en) * 1992-03-03 1997-10-14 Kabushiki Kaisha Toshiba Motion picture coding apparatus
US6125144A (en) 1996-03-08 2000-09-26 Oki Electric Industry Co., Ltd. Picture coding method and picture coder
US6130912A (en) * 1998-06-09 2000-10-10 Sony Electronics, Inc. Hierarchical motion estimation process and system using block-matching and integral projection
US6141449A (en) 1997-04-14 2000-10-31 Kokusai Denshin Denwa Kabushiki Kaisha Coding mode determination system
US6421386B1 (en) * 1999-12-29 2002-07-16 Hyundai Electronics Industries Co., Ltd. Method for coding digital moving video including gray scale shape information
US6519005B2 (en) * 1999-04-30 2003-02-11 Koninklijke Philips Electronics N.V. Method of concurrent multiple-mode motion estimation for digital video
US6556718B1 (en) * 1998-11-17 2003-04-29 Stmicroelectronics S.R.L. Video pictures compression and coding with decision step for field/frame and motion vectors DCT
US6690728B1 (en) * 1999-12-28 2004-02-10 Sony Corporation Methods and apparatus for motion estimation in compressed domain

Family Cites Families (139)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1450809A (en) 1922-01-20 1923-04-03 George L Lamb Visor for use with automobiles
US4383272A (en) 1981-04-13 1983-05-10 Bell Telephone Laboratories, Incorporated Video signal interpolation using motion estimation
SE425870B (en) 1981-04-14 1982-11-15 Dyfverman Tomas Device for the amortization of cinematographic films
DE3854171D1 (en) 1987-06-09 1995-08-24 Sony Corp Review of motion vectors in television images.
DE3850709T2 (en) 1987-06-09 1994-11-24 Sony Corp Reduction of motion vectors in television images.
DE3851655D1 (en) 1987-06-09 1994-11-03 Sony Corp Processing the motion vector in television images.
DE3851786D1 (en) 1987-06-09 1994-11-17 Sony Corp Selecting a motion vector in television images.
DE3853555D1 (en) 1987-06-09 1995-05-18 Sony Corp Processing the motion vector in digital television images.
JPH0417416Y2 (en) 1987-08-19 1992-04-17
US4989090A (en) 1989-04-05 1991-01-29 Yves C. Faroudja Television scan line doubler including temporal median filter
US4967271A (en) 1989-04-05 1990-10-30 Ives C. Faroudja Television scan line doubler including temporal median filter
US5020121A (en) * 1990-08-16 1991-05-28 Hewlett-Packard Company Neighborhood block prediction bit compression
JPH04352189A (en) 1991-05-30 1992-12-07 Nec Corp Character information input system for screen manufacture input device for videotex
EP0595895B1 (en) 1991-07-23 1997-12-29 BRITISH TELECOMMUNICATIONS public limited company Method and device for frame interpolation of a moving image
US5999173A (en) 1992-04-03 1999-12-07 Adobe Systems Incorporated Method and apparatus for video editing with video clip representations displayed along a time line
KR0166716B1 (en) * 1992-06-18 1999-03-20 강진구 Encoding and decoding method and apparatus by using block dpcm
GB2271239B (en) 1992-09-29 1996-06-19 Sony Broadcast & Communication Video to film conversion
EP0596732B1 (en) 1992-11-05 2001-04-18 Canon Kabushiki Kaisha Method per performing special effects in the receiver of a coded moving picture transmission system
US5546477A (en) 1993-03-30 1996-08-13 Klics, Inc. Data compression and decompression
CA2126467A1 (en) 1993-07-13 1995-01-14 Barin Geoffry Haskell Scalable encoding and decoding of high-resolution progressive video
GB9315775D0 (en) 1993-07-30 1993-09-15 British Telecomm Processing image data
US5398068A (en) 1993-09-02 1995-03-14 Trustees Of Princeton University Method and apparatus for determining motion vectors for image sequences
JPH07135663A (en) 1993-09-17 1995-05-23 Oki Electric Ind Co Ltd Method and device for detecting movement vector
GB9325073D0 (en) 1993-12-07 1994-02-02 Eidos Plc Improvements in or relating to video processing systems
JP3344601B2 (en) 1993-12-29 2002-11-11 ソニー株式会社 Image data reproducing method and apparatus, still image detecting apparatus and method, scene change detection device and its method, and the frame synchronizer
US5592226A (en) 1994-01-26 1997-01-07 Btg Usa Inc. Method and apparatus for video data compression using temporally adaptive motion interpolation
GB9401897D0 (en) 1994-02-01 1994-03-30 Snell & Wilcox Ltd Video processing
JP3193833B2 (en) 1994-07-25 2001-07-30 ケイディーディーアイ株式会社 The motion vector processing unit
JP2671820B2 (en) * 1994-09-28 1997-11-05 日本電気株式会社 Bidirectional prediction method and bidirectional prediction device
US5615287A (en) 1994-12-02 1997-03-25 The Regents Of The University Of California Image compression technique
US5568200A (en) 1995-06-07 1996-10-22 Hitachi America, Ltd. Method and apparatus for improved video display of progressively refreshed coded video
EP0750428B1 (en) * 1995-06-22 2004-03-31 Canon Kabushiki Kaisha Image processing apparatus and method
US6101282A (en) * 1995-06-22 2000-08-08 Canon Kabushiki Kaisha Apparatus and method for image data encoding
DE19536691B4 (en) 1995-09-30 2008-04-24 Bts Holding International B.V. Method and apparatus for correcting image errors in prior television scanning even film
US6084908A (en) * 1995-10-25 2000-07-04 Sarnoff Corporation Apparatus and method for quadtree based variable block size motion estimation
US6331856B1 (en) 1995-11-22 2001-12-18 Nintendo Co., Ltd. Video game system with coprocessor providing high speed efficient 3D graphics and digital audio signal processing
EP0777375A3 (en) 1995-12-05 1998-10-14 Canon Kabushiki Kaisha Method of and apparatus for network distribution of record data using transmittal symbols hand entered on a transmittal sheet
US5838828A (en) 1995-12-12 1998-11-17 Massachusetts Institute Of Technology Method and apparatus for motion estimation in a video signal
FR2742900B1 (en) 1995-12-22 1998-02-13 Thomson Multimedia Sa Method for interpolating progressive frames
DE69736549T2 (en) 1996-02-29 2007-08-23 Acuson Corp., Mountain View System method and transducer for aligning a plurality of ultrasound images
US6256068B1 (en) 1996-05-08 2001-07-03 Matsushita Electric Industrial Co., Ltd. Image data format conversion apparatus
WO1997046020A2 (en) 1996-05-24 1997-12-04 Philips Electronics N.V. Motion vector processing
EP1085763B1 (en) * 1996-05-28 2003-01-22 Matsushita Electric Industrial Co., Ltd. Image predictive coding apparatus and method.
JPH1023420A (en) 1996-07-02 1998-01-23 Matsushita Electric Ind Co Ltd Method and device for detecting movement
GB2320388B (en) 1996-11-29 1999-03-31 Sony Corp Image processing apparatus
US6067321A (en) * 1997-04-03 2000-05-23 Lsi Logic Corporation Method and apparatus for two-row macroblock decoding to improve caching efficiency
JP3226020B2 (en) 1997-05-28 2001-11-05 日本電気株式会社 Motion vector detecting device
EP0883298A3 (en) 1997-06-04 2000-03-29 Hitachi, Ltd. Conversion apparatus for image signals and TV receiver
US6222885B1 (en) 1997-07-23 2001-04-24 Microsoft Corporation Video codec semiconductor chip
SG116400A1 (en) * 1997-10-24 2005-11-28 Matsushita Electric Ind Co Ltd A method for computational graceful degradation inan audiovisual compression system.
JP2001507908A (en) 1997-11-07 2001-06-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Encoding of the image sequence
CN1668111A (en) * 1997-12-01 2005-09-14 三星电子株式会社 Motion vector prediction method
JP3149840B2 (en) 1998-01-20 2001-03-26 日本電気株式会社 Motion vector detecting apparatus and method
EP1084577A1 (en) 1998-04-03 2001-03-21 Miranda Technologies Inc. Hdtv up converter
US6181382B1 (en) 1998-04-03 2001-01-30 Miranda Technologies Inc. HDTV up converter
JP4352189B2 (en) 1998-08-20 2009-10-28 株式会社安川電機 Motor with magnetic encoder and a magnetic encoder
US6185329B1 (en) 1998-10-13 2001-02-06 Hewlett-Packard Company Automatic caption text detection and processing for digital images
US6157396A (en) 1999-02-16 2000-12-05 Pixonics Llc System and method for using bitstream information to process images for use in digital display systems
JP2000350211A (en) 1999-06-07 2000-12-15 Toshiba Corp Method and device for encoding moving picture
EP1142343A1 (en) * 1999-10-29 2001-10-10 Philips Electronics N.V. Video encoding method
US6765964B1 (en) 2000-12-06 2004-07-20 Realnetworks, Inc. System and method for intracoding video data
WO2002071640A1 (en) 2001-03-05 2002-09-12 Intervideo, Inc. Systems and methods for encoding and decoding redundant motion vectors in compressed video bitstreams
DE10127238C1 (en) 2001-05-28 2003-01-16 Demag Cranes & Components Gmbh Means for detecting a cable movement for a hoist, in particular for a pneumatically operated cable balancer
KR100408294B1 (en) 2001-09-05 2003-12-01 삼성전자주식회사 Method adapted for low bit-rate moving picture coding
EP1294194B8 (en) 2001-09-10 2010-08-04 Texas Instruments Incorporated Apparatus and method for motion vector estimation
JP2003169338A (en) 2001-09-18 2003-06-13 Matsushita Electric Ind Co Ltd Method and device for detecting motion vector and medium with method program recorded
JP4114859B2 (en) 2002-01-09 2008-07-09 松下電器産業株式会社 The motion vector coding method and a motion vector decoding method
CA2574444A1 (en) 2002-01-18 2003-07-31 Kabushiki Kaisha Toshiba Video encoding method and apparatus and video decoding method and apparatus
KR100474285B1 (en) 2002-04-08 2005-03-08 엘지전자 주식회사 Method for finding motion vector
JP2003319400A (en) 2002-04-26 2003-11-07 Sony Corp Encoding apparatus, decoding apparatus, image processing apparatus, and method and program for them
US7386048B2 (en) 2002-05-28 2008-06-10 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode organization
US7289672B2 (en) 2002-05-28 2007-10-30 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode estimation
JP2004048512A (en) 2002-07-12 2004-02-12 Renesas Technology Corp Moving picture encoding method and moving picture encoding circuit
US6707367B2 (en) 2002-07-23 2004-03-16 Broadcom, Corp. On-chip multiple tap transformer and inductor
US6925123B2 (en) 2002-08-06 2005-08-02 Motorola, Inc. Method and apparatus for performing high quality fast predictive motion search
US7023921B2 (en) 2002-08-06 2006-04-04 Motorola, Inc. Method and apparatus for determining block match quality
JP4198550B2 (en) 2002-09-10 2008-12-17 株式会社東芝 Device using the frame interpolation process and the frame interpolating method
US7319862B1 (en) 2002-09-26 2008-01-15 Exphand, Inc. Block-based encoding and decoding information transference system and method
US7010279B2 (en) 2002-11-27 2006-03-07 Broadcom Corporation Radio frequency integrated circuit electro-static discharge circuit
KR100534207B1 (en) 2002-12-09 2005-12-08 삼성전자주식회사 Device and method for motion estimating of video coder
JP3968712B2 (en) 2003-04-28 2007-08-29 ソニー株式会社 Motion prediction compensation apparatus and method
JP2004343349A (en) 2003-05-14 2004-12-02 Matsushita Electric Ind Co Ltd Motion vector detector and digital camera device
US7526028B2 (en) 2003-07-25 2009-04-28 Taiwan Imaging-Tek Corp. Motion estimation method and apparatus for video data compression
JP2005057270A (en) 2003-08-01 2005-03-03 Stmicroelectronics Sa Switchable inductance
JP4366571B2 (en) 2003-09-18 2009-11-18 日本電気株式会社 Video encoding apparatus and method
US20050135481A1 (en) 2003-12-17 2005-06-23 Sung Chih-Ta S. Motion estimation with scalable searching range
US7751482B1 (en) 2004-02-27 2010-07-06 Vbrick Systems, Inc. Phase correlation based motion estimation in hybrid video compression
JP4252916B2 (en) 2004-03-18 2009-04-08 富士通マイクロエレクトロニクス株式会社 Method of determining the motion vector search range
KR100631777B1 (en) 2004-03-31 2006-10-12 삼성전자주식회사 Method and apparatus for effectively compressing motion vectors in multi-layer
US7515637B2 (en) 2004-05-21 2009-04-07 Broadcom Advanced Compression Group, Llc Video decoding for motion compensation with weighted prediction
EP1610560A1 (en) 2004-06-24 2005-12-28 Deutsche Thomson-Brandt Gmbh Method and apparatus for generating and for decoding coded picture data
US20050286777A1 (en) 2004-06-27 2005-12-29 Roger Kumar Encoding and decoding images
JP4537136B2 (en) 2004-07-16 2010-09-01 学校法人早稲田大学 Motion estimation method and a motion estimation apparatus, and program
US8553776B2 (en) 2004-07-21 2013-10-08 QUALCOMM Inorporated Method and apparatus for motion vector assignment
CN101023673B (en) 2004-09-16 2011-06-08 汤姆逊许可证公司 Video codec with weighted prediction utilizing local brightness variation
US7764740B2 (en) 2004-11-24 2010-07-27 Electronics And Telecommunications Research Institute Fast block mode determining method for motion estimation, and apparatus thereof
US8693540B2 (en) 2005-03-10 2014-04-08 Qualcomm Incorporated Method and apparatus of temporal error concealment for P-frame
US7526256B2 (en) 2005-05-25 2009-04-28 Broadcom Corporation Transformer-based multi-band RF front-end architecture
TWI277010B (en) 2005-09-08 2007-03-21 Quanta Comp Inc Motion vector estimation system and method
US8107748B2 (en) 2005-09-16 2012-01-31 Sony Corporation Adaptive motion search range
US8005308B2 (en) 2005-09-16 2011-08-23 Sony Corporation Adaptive motion estimation for temporal prediction filter over irregular motion vector samples
US20070239546A1 (en) 2006-04-10 2007-10-11 Scott Blum Computer implemented interactive advertising system and method
US20070268964A1 (en) 2006-05-22 2007-11-22 Microsoft Corporation Unit co-location-based motion estimation
KR100829169B1 (en) 2006-07-07 2008-05-13 건국대학교 산학협력단 Apparatus and method for estimating compression modes for H.264 codings
JP4322904B2 (en) 2006-09-19 2009-09-02 株式会社東芝 Interpolation-frame creating apparatus, a motion vector detecting device, the interpolation frame generation method, the motion vector detecting method, the interpolation frame generation program and the motion vector detection program
US7756348B2 (en) 2006-10-30 2010-07-13 Hewlett-Packard Development Company, L.P. Method for decomposing a video sequence frame
CN100548049C (en) 2007-01-09 2009-10-07 浙江大学 Method of H.264 quick motion estimation based on multi-reference frame
KR101365574B1 (en) 2007-01-29 2014-02-20 삼성전자주식회사 Method and apparatus for video encoding, and Method and apparatus for video decoding
US7683851B2 (en) 2007-03-19 2010-03-23 Broadcom Corporation Method and system for using a single transformer for FM transmit and FM receive functions
KR20080085423A (en) 2007-03-20 2008-09-24 엘지전자 주식회사 Bma and encoder
US20080240242A1 (en) 2007-03-27 2008-10-02 Nokia Corporation Method and system for motion vector predictions
US8160150B2 (en) 2007-04-10 2012-04-17 Texas Instruments Incorporated Method and system for rate distortion optimization
US20080281685A1 (en) 2007-05-07 2008-11-13 Christopher Jaffe Media with embedded advertising
JP4523023B2 (en) 2007-08-07 2010-08-11 パナソニック株式会社 The image coding apparatus and method
KR101396365B1 (en) 2007-08-28 2014-05-30 삼성전자주식회사 Method and apparatus for spatiotemporal motion estimation and motion compensation of video
CN101378504B (en) 2007-08-31 2011-12-07 昆山杰得微电子有限公司 H.264 encoded block matching for motion estimation
KR100929607B1 (en) 2007-12-26 2009-12-03 한양대학교 산학협력단 Procedure for transcoding MPEG-2 main profile into H.264/AVC baseline profile
US9602774B2 (en) 2007-12-28 2017-03-21 Verizon Patent And Licensing Inc. Method and apparatus for providing virtual channels
US20090207915A1 (en) 2008-02-15 2009-08-20 Freescale Semiconductor, Inc. Scalable motion search ranges in multiple resolution motion estimation for video compression
KR20090095317A (en) 2008-03-05 2009-09-09 삼성전자주식회사 Method and apparatus for encoding and decoding image
WO2009115901A2 (en) 2008-03-19 2009-09-24 Nokia Corporation Combined motion vector and reference index prediction for video coding
CN102067601B (en) 2008-04-11 2014-03-12 汤姆森特许公司 Methods and apparatus for template matching prediction (TMP) in video encoding and decoding
US20090323807A1 (en) 2008-06-30 2009-12-31 Nicholas Mastronarde Enabling selective use of fractional and bidirectional video motion estimation
TW201019620A (en) 2008-11-04 2010-05-16 Ra Link Technology Corp Front-end architecture of RF transceiver and transceiver chip thereof
US20110286523A1 (en) 2009-01-29 2011-11-24 Anthony Peter Dencher Method and apparatus for efficient hardware motion estimation
WO2010086041A1 (en) 2009-01-30 2010-08-05 Gottfried Wilhelm Leibniz Universität Hannover Method and apparatus for coding and decoding a video signal
US8076996B2 (en) 2009-02-10 2011-12-13 Electronics And Telecommunications Research Institute Hybrid balun apparatus
US8279018B1 (en) 2009-03-16 2012-10-02 Marvell International Ltd. Trifila balun for wireless transceiver
US8295551B2 (en) 2009-04-08 2012-10-23 Samsung Electronics Co., Ltd. System and method of adaptive vertical search range tracking for motion estimation in digital video
US20110002387A1 (en) 2009-07-03 2011-01-06 Yi-Jen Chiu Techniques for motion estimation
US8917769B2 (en) 2009-07-03 2014-12-23 Intel Corporation Methods and systems to estimate motion based on reconstructed reference frames at a video decoder
TW201204054A (en) 2010-01-14 2012-01-16 Intel Corp Techniques for motion estimation
GB2477033B (en) 2009-07-03 2012-04-18 Intel Corp Techniques for motion estimation
JP5216710B2 (en) 2009-07-24 2013-06-19 日立コンシューマエレクトロニクス株式会社 Decoding method
US8462852B2 (en) 2009-10-20 2013-06-11 Intel Corporation Methods and apparatus for adaptively choosing a search range for motion estimation
WO2012045225A1 (en) 2010-10-06 2012-04-12 Intel Corporation System and method for low complexity motion vector derivation
KR101422422B1 (en) 2010-12-21 2014-07-23 인텔 코오퍼레이션 System and method for enhanced dmvd processing
JP5911517B2 (en) 2011-03-15 2016-04-27 インテル・コーポレーション Low-memory access motion vector derivation
US8519814B2 (en) 2011-09-30 2013-08-27 Intel Corporation Switchable transformer with embedded switches inside the windings

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677735A (en) * 1992-03-03 1997-10-14 Kabushiki Kaisha Toshiba Motion picture coding apparatus
US6125144A (en) 1996-03-08 2000-09-26 Oki Electric Industry Co., Ltd. Picture coding method and picture coder
US6141449A (en) 1997-04-14 2000-10-31 Kokusai Denshin Denwa Kabushiki Kaisha Coding mode determination system
US6130912A (en) * 1998-06-09 2000-10-10 Sony Electronics, Inc. Hierarchical motion estimation process and system using block-matching and integral projection
US6556718B1 (en) * 1998-11-17 2003-04-29 Stmicroelectronics S.R.L. Video pictures compression and coding with decision step for field/frame and motion vectors DCT
US6519005B2 (en) * 1999-04-30 2003-02-11 Koninklijke Philips Electronics N.V. Method of concurrent multiple-mode motion estimation for digital video
US6690728B1 (en) * 1999-12-28 2004-02-10 Sony Corporation Methods and apparatus for motion estimation in compressed domain
US6421386B1 (en) * 1999-12-29 2002-07-16 Hyundai Electronics Industries Co., Ltd. Method for coding digital moving video including gray scale shape information

Non-Patent Citations (11)

* Cited by examiner, † Cited by third party
Title
"Working Draft No. 2, Revision 0 (WD-2)," Document JVT-B118, Dec. 3, 2001, pp. 1,3-100; p. 27, paragraph 4.4.4-p. 32, paragraph 4.4.5.
Anttila, Ismo, et al., "Transferring real-time video on the Internet,", www.tml.hut.fi/Opinnot/Tik-110.551/1997/iwsem.html, printed Aug. 4, 2000.
Bjontegaard, G. (editor), "H. 26L Test Model Long Term 8 (TML-8) draftO, " ITU Study Group 16, Apr. 2, 2001, pp. 1-2, 16-19.
Bjontegaard, Gisle, Video Coding Experts Group (Question 15), ITU-Telecommunications Standardization Section, Document Q15-J-72, Tenth Meeting: Osaka, May 16-18, 2000.
Bjontegaard, Gisle, Video Coding Experts Group (Question 15), ITU—Telecommunications Standardization Section, Document Q15-J-72, Tenth Meeting: Osaka, May 16-18, 2000.
Bjontegaard, Gisle, Video Coding Experts Group (Question 15), ITU-Telecommunications Standardization Sector, Document Q15-F-11, Sixth Meeting: Seol, Korea, Nov. 3-6, 1998.
Bjontegaard, Gisle, Video Coding Experts Group (Question 15), ITU—Telecommunications Standardization Sector, Document Q15-F-11, Sixth Meeting: Seol, Korea, Nov. 3-6, 1998.
ITU-Telecommunication Standardization Sector, Study Group 16, "MVC Decoder Description", Study Period 1997-2000, Geneva, Feb. 7-18, 2000.
ITU—Telecommunication Standardization Sector, Study Group 16, "MVC Decoder Description", Study Period 1997-2000, Geneva, Feb. 7-18, 2000.
Sadka, A.H., et al., "Error Performance Improvement in Block-Transform Video Coders", www.research.att.com/mrc/pv99/contents/papers/sadka/sadka.htm, printed Aug. 4, 2000.
Wiseman, John, "An Introduction to MPEG Video Compression," members.aol.com/symbandgrl., printed Apr. 14, 2000.

Cited By (232)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8908764B2 (en) 2000-12-06 2014-12-09 Intel Corporation System and method for intracoding and decoding video data
US7706444B1 (en) 2000-12-06 2010-04-27 Realnetworks, Inc. System and method for intracoding video data
US10250885B2 (en) 2000-12-06 2019-04-02 Intel Corporation System and method for intracoding video data
US9432682B2 (en) 2000-12-06 2016-08-30 Intel Corporation System and method for intracoding video data
US9930343B2 (en) 2000-12-06 2018-03-27 Intel Corporation System and method for intracoding video data
US20030012278A1 (en) * 2001-07-10 2003-01-16 Ashish Banerji System and methodology for video compression
US9894379B2 (en) * 2001-07-10 2018-02-13 The Directv Group, Inc. System and methodology for video compression
US9549201B2 (en) 2001-07-11 2017-01-17 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US8290043B2 (en) 2001-07-11 2012-10-16 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US20130070858A1 (en) * 2001-07-11 2013-03-21 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US9083979B2 (en) 2001-07-11 2015-07-14 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8249158B2 (en) 2001-07-11 2012-08-21 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US9078002B2 (en) 2001-07-11 2015-07-07 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8488674B2 (en) 2001-07-11 2013-07-16 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US20120170665A1 (en) * 2001-07-11 2012-07-05 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US8503529B2 (en) 2001-07-11 2013-08-06 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US9232232B2 (en) 2001-07-11 2016-01-05 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US9247269B2 (en) 2001-07-11 2016-01-26 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8526496B2 (en) * 2001-07-11 2013-09-03 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US9571855B2 (en) 2001-07-11 2017-02-14 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US8488675B2 (en) 2001-07-11 2013-07-16 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8542738B2 (en) * 2001-07-11 2013-09-24 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US8279929B2 (en) 2001-07-11 2012-10-02 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US9386321B2 (en) 2001-07-11 2016-07-05 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8873629B2 (en) 2001-07-11 2014-10-28 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US9473791B2 (en) 2001-07-11 2016-10-18 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8873632B2 (en) 2001-07-11 2014-10-28 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8325809B2 (en) 2001-07-11 2012-12-04 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US20110103477A1 (en) * 2001-07-11 2011-05-05 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8477851B2 (en) 2001-07-11 2013-07-02 Dolby Laboratories Licensing Corporation Video image compression using unequal weights
US20110103479A1 (en) * 2001-07-11 2011-05-05 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US20110096837A1 (en) * 2001-07-11 2011-04-28 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US10080035B2 (en) 2001-07-11 2018-09-18 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US9788012B2 (en) 2001-07-11 2017-10-10 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8379720B2 (en) * 2001-07-11 2013-02-19 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US20100118957A1 (en) * 2001-07-11 2010-05-13 Dolby Laboratories Licensing Corporation Video Image Compression Using Unequal Weights
US8737472B2 (en) 2001-07-11 2014-05-27 Dolby Laboratories Licensing Corporation Motion vector regions
US10225574B2 (en) 2001-07-11 2019-03-05 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US8401078B2 (en) 2001-07-11 2013-03-19 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US20040179601A1 (en) * 2001-11-16 2004-09-16 Mitsuru Kobayashi Image encoding method, image decoding method, image encoder, image decode, program, computer data signal, and image transmission system
US7336711B2 (en) * 2001-11-16 2008-02-26 Ntt Docomo, Inc. Image encoding method, image decoding method, image encoder, image decode, program, computer data signal, and image transmission system
US8817868B2 (en) 2001-12-17 2014-08-26 Microsoft Corporation Sub-block transform coding of prediction residuals
US10075731B2 (en) 2001-12-17 2018-09-11 Microsoft Technology Licensing, Llc Video coding / decoding with re-oriented transforms and sub-block transform sizes
US9456216B2 (en) 2001-12-17 2016-09-27 Microsoft Technology Licensing, Llc Sub-block transform coding of prediction residuals
US9432686B2 (en) 2001-12-17 2016-08-30 Microsoft Technology Licensing, Llc Video coding / decoding with motion resolution switching and sub-block transform sizes
US8743949B2 (en) 2001-12-17 2014-06-03 Microsoft Corporation Video coding / decoding with re-oriented transforms and sub-block transform sizes
US7577305B2 (en) * 2001-12-17 2009-08-18 Microsoft Corporation Spatial extrapolation of pixel values in intraframe video coding and decoding
US10158879B2 (en) 2001-12-17 2018-12-18 Microsoft Technology Licensing, Llc Sub-block transform coding of prediction residuals
US20060215919A1 (en) * 2001-12-17 2006-09-28 Microsoft Corporation Spatial extrapolation of pixel values in intraframe video coding and decoding
US9258570B2 (en) 2001-12-17 2016-02-09 Microsoft Technology Licensing, Llc Video coding / decoding with re-oriented transforms and sub-block transform sizes
US8908768B2 (en) 2001-12-17 2014-12-09 Microsoft Corporation Video coding / decoding with motion resolution switching and sub-block transform sizes
US20080049834A1 (en) * 2001-12-17 2008-02-28 Microsoft Corporation Sub-block transform coding of prediction residuals
US10123038B2 (en) 2001-12-17 2018-11-06 Microsoft Technology Licensing, Llc Video coding / decoding with sub-block transform sizes and adaptive deblock filtering
US7170937B2 (en) * 2002-05-01 2007-01-30 Texas Instruments Incorporated Complexity-scalable intra-frame prediction technique
US20030206594A1 (en) * 2002-05-01 2003-11-06 Minhua Zhou Complexity-scalable intra-frame prediction technique
US8279927B2 (en) * 2002-05-28 2012-10-02 Sharp Kabushiki Kaisha Methods and systems for image intra-prediction mode management
US20170142423A1 (en) * 2002-05-28 2017-05-18 Dolby Laboratories Licensing Corporation Methods And Systems For Image Intra-Prediction Mode Management
US9973762B2 (en) 2002-05-28 2018-05-15 Dolby Laboratories Licensing Corporation Methods and systems for image intra-prediction mode management
US9979963B2 (en) 2002-05-28 2018-05-22 Dolby Laboratories Licensing Corporation Methods and systems for image intra-prediction mode management
US7289672B2 (en) * 2002-05-28 2007-10-30 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode estimation
US8228986B2 (en) * 2002-05-28 2012-07-24 Sharp Kabushiki Kaisha Methods and systems for image intra-prediction mode management
US8233538B2 (en) * 2002-05-28 2012-07-31 Sharp Kabushiki Kaisha Methods and systems for image intra-prediction mode management
USRE43567E1 (en) 2002-05-28 2012-08-07 Sharp Kabushiki Kaisha Methods and systems for image intra-prediction mode estimation
US20080175319A1 (en) * 2002-05-28 2008-07-24 Shijun Sun Methods and Systems for Image Intra-Prediction Mode Management
US7236524B2 (en) * 2002-05-28 2007-06-26 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode communication
US20080175321A1 (en) * 2002-05-28 2008-07-24 Shijun Sun Methods and Systems for Image Intra-Prediction Mode Management
US9374590B2 (en) * 2002-05-28 2016-06-21 Dolby Laboratories Licensing Corporation Methods and systems for image intra-prediction mode management
US20160295212A1 (en) * 2002-05-28 2016-10-06 Dolby Laboratories Licensing Corporation Methods And Systems For Image Intra-Prediction Mode Management
US9774868B2 (en) * 2002-05-28 2017-09-26 Dolby Laboratories Licensing Corporation Methods and systems for image intra-prediction mode management
US20030223495A1 (en) * 2002-05-28 2003-12-04 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode communication
US20030223496A1 (en) * 2002-05-28 2003-12-04 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode organization
US20030223645A1 (en) * 2002-05-28 2003-12-04 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode estimation
US8331450B2 (en) * 2002-05-28 2012-12-11 Sharp Kabushiki Kaisha Methods and systems for image intra-prediction mode management
US20180007368A1 (en) * 2002-05-28 2018-01-04 Dolby Laboratories Licensing Corporation Methods And Systems For Image Intra-Prediction Mode Management
US20080175320A1 (en) * 2002-05-28 2008-07-24 Shijun Sun Methods and Systems for Image Intra-Prediction Mode Management
US20130064296A1 (en) * 2002-05-28 2013-03-14 Sharp Kabushiki Kaisha Methods and systems for image intra-prediction mode management
US20080175318A1 (en) * 2002-05-28 2008-07-24 Shijun Sun Methods and Systems for Image Intra-Prediction Mode Management
US7386048B2 (en) * 2002-05-28 2008-06-10 Sharp Laboratories Of America, Inc. Methods and systems for image intra-prediction mode organization
AU2013200690B2 (en) * 2002-06-28 2013-06-27 Dolby Laboratories Licensing Corporation Region sizing for macroblocks
US7995653B2 (en) * 2004-02-13 2011-08-09 France Telecom Method for finding the prediction direction in intraframe video coding
US20070147501A1 (en) * 2004-02-13 2007-06-28 Frederic Loras Method for finding the prediction direction in intraframe video coding
US8170112B2 (en) * 2004-06-28 2012-05-01 Google Inc. Video compression and encoding method
US8705625B2 (en) 2004-06-28 2014-04-22 Google Inc. Video compression and encoding method
US8634464B2 (en) 2004-06-28 2014-01-21 Google, Inc. Video compression and encoding method
US8665951B2 (en) 2004-06-28 2014-03-04 Google Inc. Video compression and encoding method
US8780992B2 (en) 2004-06-28 2014-07-15 Google Inc. Video compression and encoding method
US20120020411A1 (en) * 2004-06-28 2012-01-26 Google Inc. Video compression and encoding method
US7499492B1 (en) * 2004-06-28 2009-03-03 On2 Technologies, Inc. Video compression and encoding method
US20060159354A1 (en) * 2005-01-19 2006-07-20 Samsung Electronics Co., Ltd. Method and apparatus for predicting frequency transform coefficients in video codec, video encoder and decoder having the apparatus, and encoding and decoding method using the method
US20060176962A1 (en) * 2005-02-07 2006-08-10 Koji Arimura Image coding apparatus and image coding method
US7881377B2 (en) * 2005-02-07 2011-02-01 Panasonic Corporation Image coding apparatus and image coding method
CN100534194C (en) 2005-09-06 2009-08-26 三星电子株式会社 Methods and apparatus for video intraprediction encoding and decoding
CN100584027C (en) 2005-09-06 2010-01-20 三星电子株式会社 Methods and apparatus for video intraprediction encoding and decoding
US20090116760A1 (en) * 2006-04-28 2009-05-07 Ntt Docomo, Inc. Image predictive coding device, image predictive coding method, image predictive coding program, image predictive decoding device, image predictive decoding method and image predictive decoding program
EP2453657A1 (en) 2006-04-28 2012-05-16 NTT DoCoMo, Inc. Image predictive decoding device
WO2007125856A1 (en) 2006-04-28 2007-11-08 Ntt Docomo, Inc. Image predictive coding device, image predictive coding method, image predictive coding program, image predictive decoding device, image predictive decoding method and image predictive decoding program
US8634670B2 (en) 2006-04-28 2014-01-21 Ntt Docomo, Inc. Method, apparatus and program for efficient generation of prediction signals
US8326063B2 (en) 2006-04-28 2012-12-04 Ntt Docomo, Inc. Method, apparatus and program for efficient generation of prediction signals
EP2595381A2 (en) 2006-04-28 2013-05-22 NTT DoCoMo, Inc. Image predictive coding device, image predictive coding method, image predictive coding program, image predictive decoding device, image predictive decoding method and image predictive decoding program
EP2323405A1 (en) 2006-04-28 2011-05-18 NTT DoCoMo, Inc. Image predictive coding and decoding device, method and program
US20080175317A1 (en) * 2007-01-18 2008-07-24 Samsung Electronics Co., Ltd. Method and apparatus for encoding and decoding based on intra prediction
US8374243B2 (en) * 2007-01-18 2013-02-12 Samsung Electronics Co., Ltd. Method and apparatus for encoding and decoding based on intra prediction
EP2453655A1 (en) 2007-04-09 2012-05-16 NTT DoCoMo, Inc. Image coding using template matching
WO2008126843A1 (en) 2007-04-09 2008-10-23 Ntt Docomo, Inc. Image prediction/encoding device, image prediction/encoding method, image prediction/encoding program, image prediction/decoding device, image prediction/decoding method, and image prediction decoding program
US9031130B2 (en) 2007-04-09 2015-05-12 Ntt Docomo, Inc. Image prediction/encoding device, image prediction/encoding method, image prediction/encoding program, image prediction/decoding device, image prediction/decoding method, and image prediction decoding program
US8605786B2 (en) * 2007-09-04 2013-12-10 The Regents Of The University Of California Hierarchical motion vector processing method, software and devices
US20110129015A1 (en) * 2007-09-04 2011-06-02 The Regents Of The University Of California Hierarchical motion vector processing method, software and devices
US8442334B2 (en) 2008-01-18 2013-05-14 Panasonic Corporation Image coding method and image decoding method based on edge direction
US8971652B2 (en) 2008-01-18 2015-03-03 Panasonic Intellectual Property Corporation Of America Image coding method and image decoding method for coding and decoding image data on a block-by-block basis
US20100128995A1 (en) * 2008-01-18 2010-05-27 Virginie Drugeon Image coding method and image decoding method
US9479800B2 (en) 2008-04-07 2016-10-25 Qualcomm Incorporated Video refresh adaptation algorithms responsive to error feedback
WO2009131075A1 (en) 2008-04-24 2009-10-29 株式会社エヌ・ティ・ティ・ドコモ Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
US8705611B2 (en) 2008-04-24 2014-04-22 Ntt Docomo, Inc. Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
US20090296813A1 (en) * 2008-05-28 2009-12-03 Nvidia Corporation Intra prediction mode search scheme
US8761253B2 (en) * 2008-05-28 2014-06-24 Nvidia Corporation Intra prediction mode search scheme
US9843807B2 (en) 2008-08-04 2017-12-12 Dolby Laboratories Licensing Corporation Predictive motion vector coding
US20110142132A1 (en) * 2008-08-04 2011-06-16 Dolby Laboratories Licensing Corporation Overlapped Block Disparity Estimation and Compensation Architecture
US9445121B2 (en) 2008-08-04 2016-09-13 Dolby Laboratories Licensing Corporation Overlapped block disparity estimation and compensation architecture
US9060168B2 (en) 2008-08-04 2015-06-16 Dolby Laboratories Licensing Corporation Overlapped block disparity estimation and compensation architecture
US9667993B2 (en) 2008-08-04 2017-05-30 Dolby Laboratories Licensing Corporation Predictive motion vector coding
US9357230B2 (en) 2008-08-04 2016-05-31 Dolby Laboratories Licensing Corporation Block disparity estimation and compensation architecture
US20100061444A1 (en) * 2008-09-11 2010-03-11 On2 Technologies Inc. System and method for video encoding using adaptive segmentation
US8311111B2 (en) 2008-09-11 2012-11-13 Google Inc. System and method for decoding using parallel processing
US9924161B2 (en) 2008-09-11 2018-03-20 Google Llc System and method for video coding using adaptive segmentation
US8326075B2 (en) 2008-09-11 2012-12-04 Google Inc. System and method for video encoding using adaptive loop filter
US8897591B2 (en) 2008-09-11 2014-11-25 Google Inc. Method and apparatus for video coding using adaptive loop filter
US20100061645A1 (en) * 2008-09-11 2010-03-11 On2 Technologies Inc. System and method for video encoding using adaptive loop filter
US8325796B2 (en) 2008-09-11 2012-12-04 Google Inc. System and method for video coding using adaptive segmentation
US20100061455A1 (en) * 2008-09-11 2010-03-11 On2 Technologies Inc. System and method for decoding using parallel processing
US9357223B2 (en) 2008-09-11 2016-05-31 Google Inc. System and method for decoding using parallel processing
WO2010041624A1 (en) 2008-10-09 2010-04-15 株式会社エヌ・ティ・ティ・ドコモ Moving image encoding device, moving image decoding device, moving image encoding method, moving image decoding method, moving image encoding program, moving image decoding program, moving image processing system and moving image processing method
US9351014B2 (en) 2008-10-09 2016-05-24 Ntt Docomo, Inc. Moving image encoding and decoding system
US20110228853A1 (en) * 2008-10-09 2011-09-22 Ntt Docomo, Inc. Moving image encoding and decoding system
US20100150237A1 (en) * 2008-12-17 2010-06-17 Nvidia Corporation Selecting a macroblock encoding mode
US8831099B2 (en) 2008-12-17 2014-09-09 Nvidia Corporation Selecting a macroblock encoding mode by using raw data to compute intra cost
US8483496B2 (en) 2009-01-22 2013-07-09 Ntt Docomo, Inc. Image encoding/decoding system
KR20110114524A (en) 2009-01-22 2011-10-19 가부시키가이샤 엔.티.티.도코모 Device, method and program for image prediction encoding, device, method and program for image prediction decoding, and encoding/decoding system and method
US20100195730A1 (en) * 2009-02-02 2010-08-05 Nvidia Corporation Dual stage intra-prediction video encoding system and method
US9432674B2 (en) 2009-02-02 2016-08-30 Nvidia Corporation Dual stage intra-prediction video encoding system and method
WO2010095341A1 (en) 2009-02-18 2010-08-26 株式会社エヌ・ティ・ティ・ドコモ Image encoding device, method and program, and, image decoding device, method and program
EP2615820A1 (en) 2009-02-18 2013-07-17 NTT DoCoMo, Inc. Image encoding device, method and program, and, image decoding device, method and program
US8542936B2 (en) 2009-02-18 2013-09-24 Ntt Docomo, Inc. Image encoding and decoding device
US10063855B2 (en) 2009-03-23 2018-08-28 Ntt Docomo, Inc. Image predictive encoding and decoding device
EP2988500A1 (en) 2009-03-23 2016-02-24 Ntt Docomo, Inc. Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
EP3249924A1 (en) 2009-03-23 2017-11-29 Ntt Docomo, Inc. Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
WO2010110126A1 (en) 2009-03-23 2010-09-30 株式会社エヌ・ティ・ティ・ドコモ Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
US9031125B2 (en) 2009-03-23 2015-05-12 Ntt Docomo, Inc. Image predictive encoding and decoding device
US10284846B2 (en) 2009-03-23 2019-05-07 Ntt Docomo, Inc. Image predictive encoding and decoding device
KR20190020192A (en) 2009-03-23 2019-02-27 가부시키가이샤 엔.티.티.도코모 Image predictive encoding device, image predictive encoding method, image predictive decoding device, and image predictive decoding method
KR20170143007A (en) 2009-03-23 2017-12-28 가부시키가이샤 엔.티.티.도코모 Image predictive encoding device, image predictive encoding method, image predictive decoding device, and image predictive decoding method
KR20190019226A (en) 2009-03-23 2019-02-26 가부시키가이샤 엔.티.티.도코모 Image predictive encoding device, image predictive encoding method, image predictive decoding device, and image predictive decoding method
KR20150135546A (en) 2009-03-23 2015-12-02 가부시키가이샤 엔.티.티.도코모 Image predictive encoding device, image predictive encoding method, image predictive decoding device, and image predictive decoding method
US10284848B2 (en) 2009-03-23 2019-05-07 Ntt Docomo, Inc. Image predictive encoding and decoding device
US10284847B2 (en) 2009-03-23 2019-05-07 Ntt Docomo, Inc. Image predictive encoding and decoding device
KR20160119287A (en) 2009-03-23 2016-10-12 가부시키가이샤 엔.티.티.도코모 Image predictive encoding device, image predictive encoding method, image predictive decoding device, and image predictive decoding method
US9549186B2 (en) 2009-03-23 2017-01-17 Ntt Docomo, Inc. Image predictive encoding and decoding device
US8666179B2 (en) 2009-04-14 2014-03-04 Ntt Docomo, Inc. Image encoding apparatus and decoding apparatus
WO2010119757A1 (en) 2009-04-14 2010-10-21 株式会社エヌ・ティ・ティ・ドコモ Image encoding apparatus, method, and program, and image decoding apparatus, method, and program
US9955179B2 (en) 2009-07-03 2018-04-24 Intel Corporation Methods and systems for motion vector derivation at a video decoder
CN101945270B (en) 2009-07-06 2013-06-19 联发科技(新加坡)私人有限公司 Video coder, method for internal prediction and video data compression
US9185409B2 (en) 2010-07-20 2015-11-10 Ntt Docomo, Inc. Image prediction encoding/decoding system
CN103004206B (en) * 2010-07-20 2016-06-01 株式会社Ntt都科摩 The image prediction encoding device, image prediction encoding method, image prediction encoding program, an image prediction decoding device, image prediction decoding method, and image prediction decoding program
CN105898327B (en) * 2010-07-20 2019-03-01 株式会社Ntt都科摩 Image prediction/decoding device and image prediction decoding method
EP3070945A1 (en) 2010-07-20 2016-09-21 NTT DoCoMo, Inc. Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
US10063888B1 (en) 2010-07-20 2018-08-28 Ntt Docomo, Inc. Image prediction encoding/decoding system
CN105847837A (en) * 2010-07-20 2016-08-10 株式会社Ntt都科摩 Image prediction encoding/decoding device and method
CN103004206A (en) * 2010-07-20 2013-03-27 株式会社Ntt都科摩 Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
CN105898326B (en) * 2010-07-20 2019-01-29 株式会社Ntt都科摩 Image prediction/decoding device and image prediction decoding method
CN105120279B (en) * 2010-07-20 2018-05-29 株式会社Ntt都科摩 Image predictive coding apparatus and method, image predictive decoding apparatus and method
CN105898327A (en) * 2010-07-20 2016-08-24 株式会社Ntt都科摩 The image predictive decoding apparatus and the image predictive decoding method
US9497480B2 (en) 2010-07-20 2016-11-15 Ntt Docomo, Inc. Image prediction encoding/decoding system
CN105898326A (en) * 2010-07-20 2016-08-24 株式会社Ntt都科摩 Image prediction encoding device and image prediction encoding method
US9986261B2 (en) 2010-07-20 2018-05-29 Ntt Docomo, Inc. Image prediction encoding/decoding system
WO2012011432A1 (en) 2010-07-20 2012-01-26 株式会社エヌ・ティ・ティ・ドコモ Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
KR20160030322A (en) 2010-07-20 2016-03-16 가부시키가이샤 엔.티.티.도코모 Image prediction encoding device, image prediction encoding method, image prediction encoding program, image prediction decoding device, image prediction decoding method, and image prediction decoding program
US10225580B2 (en) 2010-07-20 2019-03-05 Ntt Docomo, Inc. Image prediction encoding/decoding system
US10230987B2 (en) 2010-07-20 2019-03-12 Ntt Docomo, Inc. Image prediction encoding/decoding system
US9794592B2 (en) 2010-07-20 2017-10-17 Ntt Docomo, Inc. Image prediction encoding/decoding system
CN105120279A (en) * 2010-07-20 2015-12-02 株式会社Ntt都科摩 Image prediction encoding/decoding device and method
KR20170003736A (en) 2010-07-20 2017-01-09 가부시키가이샤 엔.티.티.도코모 Image prediction decoding device and image prediction decoding method
CN105847837B (en) * 2010-07-20 2019-01-04 株式会社Ntt都科摩 Image prediction/decoding device and image prediction decoding method
US20130195176A1 (en) * 2010-08-10 2013-08-01 Sk Telecom Co., Ltd. Method and device for encoding/decoding image using adaptive encoding/decoding mode indexing method
KR20150093253A (en) 2010-10-06 2015-08-17 가부시키가이샤 엔.티.티.도코모 Predictive image coding device, predictive image coding method, predictive image coding program, predictive image decoding device, predictive image decoding method, and predictive image decoding program
TWI621351B (en) * 2010-10-06 2018-04-11 Ntt Docomo Inc
KR20160120353A (en) 2010-10-06 2016-10-17 가부시키가이샤 엔.티.티.도코모 Predictive image coding device, predictive image coding method, predictive image coding program, predictive image decoding device, predictive image decoding method, and predictive image decoding program
US8873874B2 (en) 2010-10-06 2014-10-28 NTT DoMoCo, Inc. Image predictive encoding and decoding system
KR20160075807A (en) 2010-10-06 2016-06-29 가부시키가이샤 엔.티.티.도코모 Predictive image coding device, predictive image coding method, predictive image coding program, predictive image decoding device, predictive image decoding method, and predictive image decoding program
TWI647949B (en) * 2010-10-06 2019-01-11 日商Ntt都科摩股份有限公司
EP3001686A1 (en) 2010-10-06 2016-03-30 NTT DOCOMO, Inc. Image predictive encoding device, image predictive encoding method, image predictive encoding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
RU2676411C1 (en) * 2011-01-12 2018-12-28 Нтт Докомо, Инк. Image predictive encoding method, image predictive encoding device, image predictive encoding program, image predictive decoding method, image predictive decoding device and image predictive decoding program
RU2650027C1 (en) * 2011-01-12 2018-04-06 Нтт Докомо, Инк. Image predictive encoding method, image predictive encoding device, image predictive encoding program, image predictive decoding method, image predictive decoding device and image predictive decoding program
US10075723B2 (en) 2011-01-12 2018-09-11 Ntt Docomo, Inc. Mode identification data reducing method for intra-prediction coding
US10178402B2 (en) 2011-01-12 2019-01-08 Ntt Docomo, Inc. Image predictive decoding device and method using REM mode to restore intra-prediction mode
WO2012096095A1 (en) 2011-01-12 2012-07-19 株式会社エヌ・ティ・ティ・ドコモ Image predict coding method, image predict coding device, image predict coding program, image predict decoding method, image predict decoding device, and image predict decoding program
WO2012096104A1 (en) 2011-01-12 2012-07-19 株式会社エヌ・ティ・ティ・ドコモ Image predict coding device, image predict coding method, image predict coding program, image predict decoding device, image predict decoding method, and image predict decoding program
US8879621B2 (en) 2011-01-12 2014-11-04 Ntt Docomo, Inc. Image predictive coding device, image predictive coding method, image predictive coding program, image predictive decoding device, image predictive decoding method, and image predictive decoding program
KR20140029369A (en) 2011-01-12 2014-03-10 가부시키가이샤 엔.티.티.도코모 Image predict coding device, image predict coding method, image predict coding program, image predict decoding device, image predict decoding method, and image predict decoding program
RU2613728C1 (en) * 2011-01-12 2017-03-21 Нтт Докомо, Инк. Image predictive encoding method, image predictive encoding device, image predictive encoding program, image predictive decoding method, image predictive decoding device and image predictive decoding program
US8780971B1 (en) 2011-04-07 2014-07-15 Google, Inc. System and method of encoding using selectable loop filters
US8781004B1 (en) 2011-04-07 2014-07-15 Google Inc. System and method for encoding video using variable loop filter
US9154799B2 (en) 2011-04-07 2015-10-06 Google Inc. Encoding and decoding motion via image segmentation
US8780996B2 (en) 2011-04-07 2014-07-15 Google, Inc. System and method for encoding and decoding video data
US8885706B2 (en) 2011-09-16 2014-11-11 Google Inc. Apparatus and methodology for a video codec system with noise reduction capability
KR20160075774A (en) 2011-11-07 2016-06-29 가부시키가이샤 엔.티.티.도코모 Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US9615088B2 (en) 2011-11-07 2017-04-04 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US10104392B2 (en) 2011-11-07 2018-10-16 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
EP3301927A1 (en) 2011-11-07 2018-04-04 NTT DoCoMo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
KR20150079989A (en) 2011-11-07 2015-07-08 가부시키가이샤 엔.티.티.도코모 Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US9788005B2 (en) 2011-11-07 2017-10-10 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
WO2013069384A1 (en) 2011-11-07 2013-05-16 株式会社エヌ・ティ・ティ・ドコモ Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US9838708B2 (en) 2011-11-07 2017-12-05 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US10104393B2 (en) 2011-11-07 2018-10-16 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
EP3054684A1 (en) 2011-11-07 2016-08-10 NTT DoCoMo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US9973775B2 (en) 2011-11-07 2018-05-15 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
KR20160075772A (en) 2011-11-07 2016-06-29 가부시키가이샤 엔.티.티.도코모 Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
US9762931B2 (en) 2011-12-07 2017-09-12 Google Inc. Encoding time management in parallel real-time video encoding
US9262670B2 (en) 2012-02-10 2016-02-16 Google Inc. Adaptive region of interest
US9131073B1 (en) 2012-03-02 2015-09-08 Google Inc. Motion estimation aided noise reduction
US9420289B2 (en) * 2012-07-09 2016-08-16 Qualcomm Incorporated Most probable mode order extension for difference domain intra prediction
US20140010279A1 (en) * 2012-07-09 2014-01-09 Qualcomm Incorporated Most probable mode order extension for difference domain intra prediction
US9344729B1 (en) 2012-07-11 2016-05-17 Google Inc. Selective prediction signal filtering
US10110918B2 (en) 2012-09-24 2018-10-23 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction decoding device and video prediction decoding method
US9736494B2 (en) 2012-09-24 2017-08-15 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction decoding device and video prediction decoding method
KR20150060877A (en) 2012-09-24 2015-06-03 가부시키가이샤 엔.티.티.도코모 Video prediction encoding device, video prediction encoding method, video prediction decoding device and video prediction decoding method
US10123042B2 (en) 2012-09-24 2018-11-06 Ntt Docomo, Inc. Video prediction encoding device, video prediction encoding method, video prediction decoding device and video prediction decoding method
EP3179722A1 (en) 2012-09-24 2017-06-14 NTT DoCoMo, Inc. Intra prediction based on interpolated reference samples
WO2014045651A1 (en) 2012-09-24 2014-03-27 株式会社エヌ・ティ・ティ・ドコモ Video prediction encoding device, video prediction encoding method, video prediction decoding device and video prediction decoding method
US9392272B1 (en) 2014-06-02 2016-07-12 Google Inc. Video coding using adaptive source variance based partitioning
US20150370931A1 (en) * 2014-06-20 2015-12-24 Alcatel-Lucent Usa Inc. Reducing the data rate of compressive measurement by using linear prediction
US9578324B1 (en) 2014-06-27 2017-02-21 Google Inc. Video coding using statistical-based spatially differentiated partitioning
US10102613B2 (en) 2014-09-25 2018-10-16 Google Llc Frequency-domain denoising
US9794574B2 (en) 2016-01-11 2017-10-17 Google Inc. Adaptive tile data size coding for video and image compression

Also Published As

Publication number Publication date
US8908764B2 (en) 2014-12-09
US8385415B2 (en) 2013-02-26
US9930343B2 (en) 2018-03-27
US9432682B2 (en) 2016-08-30
US20160366421A1 (en) 2016-12-15
US20140105292A1 (en) 2014-04-17
US20130077683A1 (en) 2013-03-28
US20180278941A1 (en) 2018-09-27
US20100296578A1 (en) 2010-11-25
US7706444B1 (en) 2010-04-27
US10250885B2 (en) 2019-04-02

Similar Documents

Publication Publication Date Title
Aravind et al. Image and video coding standards
Tudor MPEG-2 video compression
ES2442851T3 (en) Method and system for adaptive binary arithmetic coding based on context
US5946043A (en) Video coding using adaptive coding of block parameters for coded/uncoded blocks
US9924161B2 (en) System and method for video coding using adaptive segmentation
KR100767557B1 (en) Moving picture coding apparatus and moving picture decoding apparatus
US8040950B2 (en) Method and apparatus for effectively compressing motion vectors in multi-layer structure
US10187660B2 (en) Apparatus and method for encoding and decoding moving picture using adaptive scanning
US7379496B2 (en) Multi-resolution video coding and decoding
US5793897A (en) Adaptive variable-length coding and decoding methods for image data
Sun et al. Image and video compression for multimedia engineering: Fundamentals, algorithms, and standards
JP4571489B2 (en) Method and apparatus for displaying a quantizer parameters in video coding systems
US6263022B1 (en) System and method for fine granular scalable video with selective quality enhancement
Le Gall The MPEG video compression algorithm
EP1391121B1 (en) Variable length coding
US6118822A (en) Adaptive entropy coding in adaptive quantization framework for video signal coding systems and processes
US5699458A (en) Efficient browsing of encoded images
US5136371A (en) Digital image coding using random scanning
EP1701552B1 (en) Image conversion apparatus
US5812788A (en) Encoding/decoding video signals using quantization tables based on explicitly encoded base and scale matrices
US20150189251A1 (en) Method, medium, and apparatus encoding and/or decoding an image using the same coding mode across components
US7899115B2 (en) Method for scalably encoding and decoding video signal
US6393059B1 (en) Conversion of video data bit stream
US20060158355A1 (en) Methods of and apparatuses for adaptive entropy encoding and adaptive entropy decoding for scalable video encoding
US20070253488A1 (en) Coding system and method, encoding device and method, decoding device and method, recording device and method, and reproducing device and method

Legal Events

Date Code Title Description
AS Assignment

Owner name: REALNETWORKS, INC., WASHINGTON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONKLIN, GREG;REEL/FRAME:011650/0762

Effective date: 20010328

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

AS Assignment

Owner name: INTEL CORPORATION, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:REALNETWORKS, INC.;REEL/FRAME:028752/0734

Effective date: 20120419

AS Assignment

Owner name: REALNETWORKS, INC., WASHINGTON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONKLIN, GREG;REEL/FRAME:031250/0523

Effective date: 20010328

Owner name: INTEL CORPORATION, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:REALNETWORKS, INC.;REEL/FRAME:031250/0624

Effective date: 20120419

FPAY Fee payment

Year of fee payment: 12